Harm reduction · MOUD · Overdose · Integrated care

Substance use & HIV — harm reduction, treatment, and honest care.

Last reviewed: September 2026

Educational information only — not medical advice. Talk to your healthcare provider about your specific situation.

You can use drugs and still get an undetectable viral load. You can drink and still be worth treating. You can be nowhere near ready to stop and still deserve a clinic that keeps you alive. This is what the federal guidelines, the syringe program research, and the medication trials actually say about substance use and HIV — written for you, not about you.

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There is a version of this conversation you have probably already had. A provider asks what you are using, you tell some of the truth, and the room changes. Suddenly your viral load is a moral report card and your prescription refill has conditions attached to it. Somewhere in there, the thing you actually came in for — staying alive, staying undetectable, getting your wound looked at — disappears.

That version is not evidence-based. It is not what the federal HIV treatment guidelines say. It is not what nearly thirty years of syringe program research says. And it is not what the people who built harm reduction — most of them people who use drugs, many of them people living with HIV — fought for.

This page is the other version. It covers what the science says about opioids, stimulants, alcohol, cannabis, injecting, and chemsex alongside HIV treatment; which medications work and which drug interactions are real; how to stay alive through the fentanyl and xylazine era; and what Florida law actually allows. It assumes you are the person making the decisions.

Quick answer: Harm reduction means keeping you alive first, then whatever comes next. It's not abstinence-first, it's you-first. The federal HIV guidelines are explicit that ongoing substance use is not a contraindication for prescribing antiretroviral therapy, that people who use substances can achieve and maintain viral suppression, and that clinicians should be nonjudgmental about it.2 If your care is being rationed based on your urine screen, that is a provider problem, not a you problem.

The framing: two epidemics, one person

HIV and drug use in America have been described as parallel epidemics for forty years, which is a tidy phrase that hides something important: they are not parallel for the person living them. They are the same Tuesday. The same missed appointment. The same landlord, the same probation officer, the same insurance denial, the same shame.

Public health has historically responded by splitting you in two. HIV care over here, addiction treatment over there, mental health somewhere with a six-week waitlist. Each system asks you to be stable enough to deserve the other one. Addiction programs have required people to be housed; HIV clinics have required people to be sober; housing programs have required both. The technical term for this is a cascade of care. The lived term is being sent away.

The reason harm reduction reads as radical in that context is only that it starts from a different premise. The National Harm Reduction Coalition defines it as "a set of practical strategies and ideas aimed at reducing negative consequences associated with drug use," and — the part people skip — "also a movement for social justice built on a belief in, and respect for, the rights of people who use drugs."1 Its first principle accepts, "for better or worse, that licit and illicit drug use is part of our world" and chooses "to work to minimize its harmful effects rather than simply ignore or condemn them."1

Note what that is not. It is not anti-treatment. It is not pro-drug. The same framework "incorporates a spectrum of strategies that includes safer use, managed use, abstinence, meeting people who use drugs 'where they're at,' and addressing conditions of use along with the use itself."1 Abstinence is on the list. It is just not the entry fee.

NIDA's own leadership has said the quiet part out loud. Writing about the intersection of HIV and methamphetamine, the institute described the guiding philosophy of harm reduction as "meeting people where they are" — providing care regardless of substance use or other behaviors that confer some health risk — and argued that this principle "should also apply to the prevention and treatment of HIV and substance use disorders."14

The numbers, without the scare quotes

Numbers matter here for one reason: they show that this is a mainstream part of the HIV epidemic, not a footnote about other people.

HIV and injecting

CDC reported 3,864 new HIV diagnoses in 2018 among adults and adolescents who inject drugs — roughly 10% of the 37,968 new diagnoses that year. Of those, 2,492 were attributed to injection drug use and 1,372 to a combination of male-to-male sexual contact and injection drug use. Diagnoses among people who inject drugs held roughly stable from 2014 through 2018.6

"Stable" is doing a lot of work in that sentence. Stable is what the national picture looks like when local outbreaks are being contained — and what it looks like right before one isn't. KFF documented the mechanism plainly: HIV diagnoses attributed to injection drug use rose from 2,392 in 2014 to 2,635 in 2015, and about 75% of that increase was associated with a single outbreak in one rural Indiana county.8

Overdose

The overdose numbers have moved dramatically, and in the direction nobody expected. CDC's National Center for Health Statistics estimated 69,973 drug overdose deaths in the United States during 2025 — down almost 14% from the 81,313 estimated for 2024, and the third consecutive annual decline. Opioid-involved deaths fell from an estimated 55,296 to 44,564. Deaths involving cocaine and psychostimulants such as methamphetamine also decreased. Almost all states saw declines; Rhode Island, New York, North Carolina, Alabama, and Vermont dropped 25% or more, while New Mexico, Arizona, and Colorado rose 10% or more.7

That is roughly 192 people a day, and it is the best news in this field in a decade. It is also not evenly distributed, and it is not self-sustaining. The interventions credited with it — naloxone saturation, medications for opioid use disorder, syringe programs, drug checking — are exactly the ones that get defunded when the numbers improve.

What harm reduction actually is (and isn't)

Harm reduction is often described as a philosophy, which makes it sound optional. In practice it is a set of concrete, boring, verifiable services: sterile syringes and injection equipment, naloxone, fentanyl test strips, wound care, safer-use supplies, drug checking, HIV and hepatitis C testing, low-barrier prescribing, peer navigation, and a door that does not lock behind you when you use again.

SAMHSA's federal harm reduction framework, released in 2024, put the model into policy — built around leadership by people with lived and living experience of drug use, low-barrier and non-coercive access, and a focus on any positive change as defined by the person themselves. Its overdose materials are practical rather than moral: recognize the signs, give naloxone or another opioid overdose reversal medication, call 911, support breathing, stay.17

The National Harm Reduction Coalition's principles are worth reading in full if you have ever been made to feel like your care was conditional. They include non-judgmental provision of services, the recognition that "the realities of poverty, class, racism, social isolation, past trauma, sex-based discrimination and other social inequalities affect both people's vulnerability to and capacity for effectively dealing with drug-related harm," and the insistence that people who use drugs have "a real voice in the creation of programs and policies designed to serve them."1

Three things harm reduction is not

Opioids and medications that work

If you have opioid use disorder and HIV, medication is the intervention with the strongest evidence behind it — for overdose, for retention in care, and for viral suppression. Three medications are FDA-approved: buprenorphine, methadone, and naltrexone. The federal HIV guidelines describe methadone or buprenorphine as generally first-line agents.2

How they differ, practically

The head-to-head data are clarifying. In X:BOT — a 570-person, 24-week randomized trial published in The Lancet — 65% of participants assigned to extended-release naltrexone relapsed by week 24 versus 57% assigned to buprenorphine-naloxone. But most of that gap came from a single point of failure: 70 of 79 relapses in the naltrexone arm were people who never got successfully started on it. Once initiated, the investigators concluded, "both medications were equally safe and effective."9

CHOICES tested the same question inside HIV care. Across six US HIV primary care clinics, 114 people with untreated HIV and opioid use disorder were randomized to clinic-based extended-release naltrexone or to usual care with buprenorphine or methadone. Initiation again favored usual care (73% vs 47%). Viral suppression at 24 weeks was 52.7% with naltrexone and 49.2% with usual care — non-inferiority was not demonstrated, but the headline the authors drew was about medication itself: the trial "affirms the importance of medications for OUD treatment for achieving HIV viral suppression in people who use drugs."10

About that drug interaction: Buprenorphine and modern ART are almost always safe together. If a provider tells you to choose, get a second opinion. Buprenorphine undergoes about 90% first-pass hepatic metabolism, so antiretrovirals that inhibit or induce CYP enzymes can shift its levels — but the guidelines' answer is dose adjustment and monitoring, not withholding either drug.2 Before anyone drops a medication, run the actual combination through the University of Liverpool's free HIV Drug Interaction Checker, the reference clinicians use.13

Stimulants: methamphetamine and cocaine

Stimulants are where the treatment landscape gets honest about its limits. There is no FDA-approved pharmacotherapy for cocaine use disorder, and no specifically recommended pharmacotherapy for stimulant use disorder in people living with HIV.2 Anyone who tells you otherwise is selling something.

What exists is a set of partial signals. Methylphenidate, modafinil, bupropion, and naltrexone have limited evidence for reducing methamphetamine use or cravings. A randomized trial of extended-release injectable naltrexone plus extended-release oral bupropion produced more methamphetamine-negative urine samples than placebo, though overall response was low. And daily mirtazapine, tested over 36 weeks in men who have sex with men, reduced both methamphetamine-positive urine tests and sexual risk behaviors.2

Contingency management: the intervention that works and nobody funds

The most effective stimulant treatment is behavioral and involves paying people. Contingency management provides material incentives — vouchers, prize draws, gift cards — contingent on objectively verified behavior change, usually a negative urine test.

The NIDA Clinical Trials Network tested it in 113 people with methamphetamine use disorder, randomized to 12 weeks of usual treatment or usual treatment plus contingency management using escalating prize draws that reset after a missed or positive sample. Both groups stayed in treatment equally long, but the contingency management group submitted significantly more negative samples and was abstinent longer — five weeks versus three.12

A 2021 JAMA Psychiatry systematic review and meta-analysis of 74 reports covering 10,444 adults receiving medication for opioid use disorder found contingency management associated with better end-of-treatment outcomes across all six problems studied, with medium-to-large effects for stimulant use (Cohen d = 0.70), cigarette use (0.78), illicit opioid use (0.58), and medication adherence (0.75). The authors concluded that policies enabling contingency management in community treatment services "are sorely needed."11

In HIV care specifically, the federal guidelines note that contingency management is effective at decreasing stimulant use among people living with HIV, though sustained effects after the incentives stop are less clear — and that adding a positive-affect intervention to contingency management decreased viral load among gay, bisexual, and other men who have sex with men.2 Motivational interviewing and CBT also show decreased stimulant use and improved ART adherence.2

The critical clinical point, stated flatly in the guidelines: people living with HIV who use stimulants can achieve viral suppression and should be prescribed ART even if stimulant use is ongoing.2

Alcohol — the one that gets missed

Alcohol is the most common substance used by people living with HIV, and the one least likely to come up in an HIV appointment.2 It interacts with liver health, hepatitis B and C, adherence, mental health, and sleep — and unlike most drugs in this article, it is fully legal, socially expected, and served at fundraisers.

Three medications are FDA-approved for alcohol use disorder, and the interaction picture is reassuring:

And integrating alcohol treatment into HIV care produces measurable HIV outcomes. In integrated stepped-care, at 52 weeks participants had more alcohol-abstinent days, fewer drinks per drinking day, and fewer heavy drinking episodes — along with increased odds of viral suppression (odds ratio 5.58; 95% CI 1.11–27.99).2 Wide confidence interval, real signal.

As with everything else here: ongoing alcohol use is not a contraindication to ART.2

Cannabis in this context

Cannabinoids are among the most commonly used substances by people living with HIV, and cannabis occupies an unusual position in this conversation because for many people it is a symptom management tool rather than a problem — appetite, nausea, nerve pain, sleep.2 It also has its own dedicated evidence base, which we cover separately in HIV & cannabis.

Two things belong here rather than there. First, cannabis is frequently the disclosure people lead with because it feels safest to admit — which means a provider who reacts badly to it has just told you what would happen if you mentioned anything else. Second, in a polysubstance environment, "just weed" is not always just weed. Cannabis products are not the primary vector for illicitly manufactured fentanyl, but counterfeit pills sold as anything are, and mixing depressants remains the most reliable route to a fatal outcome.15

Injecting: what actually reduces harm

If you inject, the risks stack: HIV, hepatitis C, bacterial and fungal infections, endocarditis, abscesses and soft-tissue wounds, vein damage, and overdose. Almost every one of them is reduced by having your own sterile equipment every single time.

The federal HIV guidelines put syringe services programs squarely inside HIV care rather than adjacent to it: for people actively injecting, engagement in a syringe services program "can facilitate access and adherence to ART," and programs can be adapted to provide or link to rapid initiation and maintenance of effective treatment.2

Xylazine changed the calculation

Xylazine — a veterinary sedative increasingly found in the illicit fentanyl supply — is not an opioid, so naloxone does not reverse its sedation. It is associated with severe necrotizing wounds that need real care, not shame. And it has a genuine antiretroviral interaction that most people have never been told about: xylazine is a CYP3A4 substrate, so combining it with the CYP3A4 inhibitors used to boost some HIV regimens (ritonavir, cobicistat) may elevate xylazine levels and prolong its half-life. The federal guidelines advise clinicians to weigh the risks and benefits of ritonavir- or cobicistat-containing regimens for people in areas with high rates of xylazine-adulterated fentanyl.2 That is an actionable conversation to have with your HIV provider, and one you may have to start.

Practical harm reduction for injecting, from federal sources: never use alone, and make sure people around you know you have used so they can give naloxone or call for help; do not mix drugs — stimulant with stimulant, depressant with depressant, or stimulants with depressants all raise the risk of death; do not assume a familiar source is a safe source, because your body may respond differently every time; test your drugs; and keep naloxone on you and at home.15

Chemsex, party and play, and the sexual health crossover

Methamphetamine and sex are entangled for a lot of gay, bisexual, and other men who have sex with men, and pretending otherwise has cost lives. NIDA reported that a 2020 study in JAIDS found one-third of new HIV transmissions among sexual and gender minorities who have sex with men occurred in people who regularly use methamphetamine. Methamphetamine use is more prevalent among gay and bisexual men than other men; the pattern once associated primarily with white gay men is increasingly present among Black and Hispanic men who have sex with men. Beyond behavior, there is evidence methamphetamine may make the body more vulnerable to acquiring HIV and may contribute to disease progression.14

The reason those numbers persist is not that nobody has explained the risk. NIDA's own analysis is unusually candid about why fear-based messaging fails. Psychologist Sarit Golub, quoted in that piece, argued that telling gay and bisexual men about the risks of combining drugs and sex can be perceived as instilling fear and shame, alienating rather than empowering them — and can disregard a person's totality of needs, "for connection, for pleasure, and for confidence in a world that judges and shames."14

NIDA also names what methamphetamine is doing for people: coping with depression, anxiety, and trauma; enhancing sexual experience and a sense of connectedness; temporarily boosting self-confidence for people carrying stigma and shame about their sexuality or other parts of their lives.14 You cannot replace something without knowing what it did.

Practical crossover moves: get on PrEP if you are HIV-negative, or get to undetectable if you are living with HIV — both hold regardless of what you use; know that a history of stigma in healthcare leads people to hide substance use and sexual practices from providers, so finding a clinic where you don't have to is a clinical intervention, not a luxury;14 and watch the depressant stack, because GHB, ketamine, and MDMA all run partly through CYP450 pathways. Overdoses from interactions between club drugs such as MDMA or GHB and protease inhibitor–based ART have been reported, and benzodiazepines with ritonavir or cobicistat boosting produce significantly higher concentrations and prolonged sedation.2

Overdose: naloxone, drug checking, and the twelve minutes that matter

The federal HIV guidelines say clinicians should prescribe naloxone for overdose prevention for all people using opioids beyond short-term treatment of acute pain, and note that adulterants such as xylazine increase overdose risk. Even though naloxone reverses only opioid effects, that alone may be enough to reverse the overdose — which is why the guidelines call for universal access and active prescribing.2

Naloxone: get it, carry it, use it.

Where. Naloxone is available in all 50 states — at pharmacies without a prescription, from community naloxone programs, and from most syringe services programs.15 In March 2023 the FDA approved 4 mg Narcan nasal spray as the first over-the-counter naloxone product, sellable directly to consumers in drug stores, convenience stores, grocery stores, gas stations, and online.16

How. SAMHSA's overdose response sequence: check for a response, give naloxone or another opioid overdose reversal medication, call 911, and support breathing until help arrives.17 Stay with the person. Naloxone can wear off before the opioid does.

Help, any hour. SAMHSA's National Helpline is free, confidential, 24/7, 365 days a year, in English and Spanish: 1-800-662-HELP (4357).15 Treatment and service options are searchable at findtreatment.gov.

Drug checking

Fentanyl test strips are small paper strips that detect fentanyl in cocaine, methamphetamine, heroin, pills, powders, and injectables. CDC describes them as a low-cost harm reduction tool to be used in combination with other strategies. Method: set aside at least 10 mg of the drug in a clean, dry container; add water (half a teaspoon for most drugs, a full teaspoon per 10 mg for methamphetamine, MDMA, or ecstasy); dip the wavy end for about 15 seconds; lay the strip flat for two to five minutes; read it. A single pink line on the left means fentanyl or an analog was detected — CDC's guidance is that discarding the batch is much safer. Two pink lines mean none was detected.15

The limits are real and worth knowing. Strips cannot tell you how much fentanyl is present, do not distinguish fentanyl from its analogs, may miss some analogs such as alfentanil or carfentanil, may perform worse with large amounts of methamphetamine, MDMA, or diphenhydramine, and can miss fentanyl that isn't evenly distributed. A negative result is information, not a guarantee.15

Syringe services programs: the most litigated settled science in America

There is no serious scientific controversy left here, which makes the political fight over syringe programs a fight about something else.

CDC's summary of nearly thirty years of research is that comprehensive syringe services programs are safe, effective, and cost-saving; do not increase illegal drug use or crime; and reduce the spread of HIV, viral hepatitis, and other infections. Programs are associated with an estimated 50% reduction in HIV and hepatitis C infections — and transmission is reduced by over two-thirds when programs are combined with medications that treat opioid dependence. New participants are five times more likely to enter treatment and about three times more likely to stop using drugs. On the crime question, studies in Baltimore and New York City found that crime rates did not change based on whether an area had a syringe program.3

Scott County: what happens without one

Between November 18, 2014 and November 1, 2015, HIV was diagnosed in 181 people in a rural Indiana community of about 4,200. Peters and colleagues, reporting in the New England Journal of Medicine, found that 87.8% reported injecting extended-release oxymorphone and 92.3% were coinfected with hepatitis C. Each additional time a person was named as a syringe-sharing partner raised risk (adjusted risk ratio 1.9; P<0.001). A public health emergency was declared on March 26, 2015, and Indiana's first syringe services program was established in response.4

The program worked fast: 277 people enrolled and more than 90,000 syringes were distributed and returned between April and October 2015. The outbreak also moved federal policy — Congress overturned the longstanding ban on federal funding for syringe services programs in its wake.5

Scott County is cited constantly as a cautionary tale, and it is. But the honest reading is narrower and harsher: the outbreak happened in a place where the intervention was illegal, and it stopped when the intervention became legal. That is not a mystery. That is a policy choice with a body count.

Integrated care: what good actually looks like

The federal HIV guidelines are unusually prescriptive about what your care should include. Screening for substance use disorders should be a routine part of clinical care (rated AII). Providers should be nonjudgmental (AIII). People should be screened for co-occurring mental health conditions (AII). Evidence-based pharmacotherapy for substance use disorders should be offered as part of comprehensive HIV care (AI) — the strongest rating in the system. And once-daily or single-tablet regimens with high resistance barriers, low liver toxicity, and low interaction potential are preferred (AIII).2

That last one is a substance-use-specific design choice, and it is in your favor: fewer pills, fewer times a day, more forgiveness for a missed dose, less to go wrong when your week goes wrong.

What to ask for by name

Ask your HIV clinic

The integrated-care checklist

Recommendations drawn from the HHS/NIH Adult and Adolescent Antiretroviral Guidelines, Substance Use Disorders and HIV.

Reentry: the most dangerous two weeks

If you or someone you love is coming out of jail or prison, this is the section to read twice.

Binswanger and colleagues followed 30,237 people released from Washington State prisons between 1999 and 2003, linking corrections records to the National Death Index. Overall mortality was 777 deaths per 100,000 person-years — an adjusted risk of death 3.5 times that of other state residents. In the first two weeks after release, the risk of death was 12.7 times higher than for other residents, and the relative risk of death specifically from drug overdose was 129 (95% CI, 89–186). Overdose was the leading cause of death.18

The mechanism is straightforward and preventable. Tolerance drops during incarceration. Medications for opioid use disorder are frequently interrupted or never offered. Release day arrives with no naloxone, no prescription, no appointment, and often no ID or insurance. Then someone uses what used to be their normal amount.

What changes the odds: continuing or starting medication for opioid use disorder before release rather than after; naloxone in hand on day one, for the person leaving and for whoever they are going home to; a first HIV appointment already scheduled with a filled prescription, not a referral slip; and the plain arithmetic said out loud — your tolerance is lower than it was, so a former dose is now a potentially fatal dose. The federal guidelines specifically name extended-release naltrexone as an option for people recently released from correctional facilities when other options are not available.2

Who gets left out

Harm reduction services were built by and largely for a specific set of people, and coverage remains uneven. Some patterns worth naming:

Arrow is my hero. He is my co-professor, co-investigator, and IDEA's most treasured ambassador. He is by my side as I teach the next generation of physicians to treat people who inject drugs with the dignity and respect they deserve… I loved him when he was using. I love him when he is not using. — Hansel Tookes, MD, MPH, founder and medical director of the IDEA Exchange, on peer navigator Chetwyn "Arrow" Archer, in HIV.gov's #NHASeverywhere series.22

Florida: legal, restricted, and privately funded

Florida is a useful case study in what a syringe program law looks like when it passes over sustained objection.

The state's first legal program, the IDEA Exchange, opened on December 1, 2016 — World AIDS Day — as a pilot operated by the University of Miami Miller School of Medicine, authorized by the Infectious Disease Elimination Act. It provides anonymous exchange of new syringes for used ones, HIV prevention, testing and treatment, hepatitis C testing and treatment, substance use disorder treatment, wound care, medication management, appointment reminders, and peer navigation for services including housing and health insurance.21 HIV.gov, profiling the program, described its mission as providing the tools necessary to reduce the spread of HIV, hepatitis C, and other blood-borne diseases through harm reduction in South Florida.22

In 2019 the legislature extended authorization statewide. Under Florida Statute 381.0038, a county commission may authorize a syringe exchange program within its boundaries — at fixed sites or mobile health units — and a program may not operate without that authorization. The county must pass an ordinance, enter a letter of agreement with the Department of Health, enlist the county health department, and contract with a licensed hospital, a licensed health care clinic, an accredited Florida medical school, a licensed addictions receiving facility, or a 501(c)(3) HIV/AIDS service organization.19

What the law requires — and what it withholds

Programs must operate a strict one-to-one exchange: one sterile needle and syringe unit for each used one returned. They must provide educational materials on HIV, viral hepatitis, and other blood-borne diseases; on-site counseling or referrals for drug abuse prevention, education, and treatment; on-site HIV and viral hepatitis screening or referrals available within 72 hours (extendable in rural counties); and kits containing an emergency opioid antagonist, or referrals to programs that provide them. Participants' personal identifying information may not be collected for any purpose. Annual reports go to the county commission and the Department of Health by August 1, with a statewide compilation to the Governor, Senate President, and House Speaker by October 1.1920

Two provisions matter enormously in practice. The protective one: possession, distribution, or exchange of needles or syringes as part of an authorized program is not a violation of Florida's drug laws — though that protection does not extend to needles obtained outside the program or redistributed outside it.19

The limiting one: state, county, and municipal funds may not be used to operate an exchange program. Programs must be funded through grants and donations from private sources.19 Florida has legalized the single most cost-saving HIV prevention intervention available to it and declined to pay for it. Every syringe distributed in this state is a philanthropic act.

The one-to-one requirement is the other binding constraint. CDC's evidence base concerns comprehensive programs with adequate supply; a person who cannot return used syringes — because they were confiscated, discarded in a hurry, or taken in a sweep — cannot get sterile ones.3

If you are in Florida: the Department of Health maintains the official IDEA program information, including establishment and reporting requirements.20 Because authorization is county-by-county, availability depends on where you live — and pushing your county commission is a concrete, winnable form of advocacy.

What to do with this

Start with whatever is closest to hand. Nothing on this list requires you to have made a decision about your drug use.

This week

Next appointment

If your provider responds badly

You are allowed to change providers. A clinician who meets honest disclosure with judgment has told you something useful about the rest of your care with them. Ryan White clinics, community health centers, LGBTQ+ health centers, and syringe program-affiliated clinics tend to be the most practiced at this. Community publications like POZ, Positively Aware, and TheBody have carried first-person accounts of drug use and HIV for decades if you want to hear from people who have been in the chair before you.

The bottom line. Ongoing substance use is not a contraindication for antiretroviral therapy; people who use substances achieve and maintain viral suppression; medications for opioid and alcohol use disorder belong inside HIV care; and clinicians are told, in writing, to be nonjudgmental about all of it.2 Syringe services programs cut HIV and hepatitis C transmission by roughly half, and by over two-thirds alongside medication for opioid dependence.3 Overdose deaths have fallen three years running because these tools were deployed at scale.7 None of that required anyone to stop using first.

Related pages

References & Sources

Federal clinical guidelines and public health data (HHS/NIH, CDC, NCHS, FDA, SAMHSA, NIDA, HIV.gov), peer-reviewed randomized trials and meta-analyses, Florida statute and Department of Health program documentation, and the National Harm Reduction Coalition.

  1. National Harm Reduction Coalition — Principles of Harm Reduction. The movement's own definition of harm reduction as both a set of practical strategies and a social justice movement, plus the full list of central principles including non-judgmental service provision, the role of poverty, racism, trauma and social inequality, and the requirement that people who use drugs have a real voice in programs designed to serve them.
  2. HHS/NIH Panel on Antiretroviral Guidelines for Adults and Adolescents — Substance Use Disorders and HIV. The core federal clinical source for this article: panel recommendations and ratings on routine SUD screening, nonjudgmental care, mental health screening and evidence-based pharmacotherapy within HIV care; the statements that ongoing substance and alcohol use are not contraindications to ART; Table 15 dosing and interaction data for buprenorphine, methadone, naltrexone, acamprosate and disulfiram; stimulant treatment evidence including contingency management; club drug, benzodiazepine and xylazine interactions with ritonavir- and cobicistat-boosted regimens; naloxone prescribing; and syringe services programs as a route to ART access and adherence.
  3. Centers for Disease Control and Prevention — Syringe Services Programs. CDC's synthesis of nearly thirty years of research: comprehensive SSPs are safe, effective and cost-saving, do not increase illegal drug use or crime, are associated with an estimated 50% reduction in HIV and HCV infections and over two-thirds reduction when combined with medications treating opioid dependence, and new participants are five times more likely to enter treatment; Baltimore and New York City crime-rate findings.
  4. Peters PJ, Pontones P, Hoover KW, et al. HIV infection linked to injection use of oxymorphone in Indiana, 2014–2015. New England Journal of Medicine. 2016;375(3):229–239. The Scott County outbreak investigation: 181 people diagnosed between November 2014 and November 2015, 87.8% reporting injection of extended-release oxymorphone, 92.3% hepatitis C coinfection, adjusted risk ratio 1.9 per naming as a syringe-sharing partner, the March 26, 2015 public health emergency declaration, and establishment of Indiana's first syringe services program.
  5. Lessons from Scott County — Progress or Paralysis on Harm Reduction? New England Journal of Medicine perspective. Follow-up analysis reporting 277 enrollees and more than 90,000 syringes distributed and returned between April and October 2015, and the outbreak's role in Congress overturning the federal funding ban on syringe services programs.
  6. Centers for Disease Control and Prevention — HIV and People Who Inject Drugs. CDC surveillance summary: 3,864 new HIV diagnoses in 2018 among adults and adolescents who inject drugs, about 10% of the 37,968 new diagnoses that year, with 2,492 attributed to injection drug use and 1,372 to male-to-male sexual contact and injection drug use; diagnoses stable 2014–2018.
  7. CDC National Center for Health Statistics — U.S. Overdose Deaths Decrease for Third Consecutive Year (provisional data through December 2025). Provisional estimates of 69,973 drug overdose deaths in 2025, down almost 14% from 81,313 in 2024; opioid-involved deaths falling from an estimated 55,296 to 44,564; declines in cocaine- and psychostimulant-involved deaths; and state-level variation including declines of 25% or more in Rhode Island, New York, North Carolina, Alabama and Vermont and increases of 10% or more in New Mexico, Arizona and Colorado.
  8. KFF — HIV and the Opioid Epidemic: 5 Key Points (issue brief, PDF). Policy analysis documenting the rise in HIV diagnoses attributed to injection drug use from 2,392 in 2014 to 2,635 in 2015, with roughly 75% of the increase associated with the Scott County, Indiana outbreak.
  9. Lee JD, Nunes EV, Novo P, et al. Comparative effectiveness of extended-release naltrexone versus buprenorphine-naloxone for opioid relapse prevention (X:BOT): a multicentre, open-label, randomised controlled trial. The Lancet. 2018;391(10118):309–318. 570 participants over 24 weeks: 65% relapse with extended-release naltrexone versus 57% with buprenorphine-naloxone (HR 1.36; 95% CI 1.10–1.68), with most of the difference attributable to 70 of 79 relapses occurring among naltrexone induction failures, and the conclusion that once initiated both medications were equally safe and effective.
  10. Korthuis PT, Cook RR, Lum PJ, et al. HIV clinic-based extended-release naltrexone versus treatment as usual for people with HIV and opioid use disorder: a non-blinded, randomized non-inferiority trial (CHOICES / CTN-0067). Addiction. 2022. 114 participants with untreated HIV and opioid use disorder across six US HIV primary care clinics: medication initiation 47% with extended-release naltrexone versus 73% with treatment as usual; viral suppression at 24 weeks 52.7% versus 49.2% (non-inferiority not demonstrated); and the authors' conclusion affirming the importance of medications for opioid use disorder in achieving HIV viral suppression among people who use drugs.
  11. Bolívar HA, Klemperer EM, Coleman SRM, et al. Contingency management for patients receiving medication for opioid use disorder: a systematic review and meta-analysis. JAMA Psychiatry. 2021;78(10):1092–1102. 74 reports involving 10,444 adults, 60 included in meta-analysis: contingency management associated with better end-of-treatment outcomes across all six clinical problems, with medium-to-large effect sizes for stimulant use (Cohen d = 0.70), cigarette use (0.78), illicit opioid use (0.58) and medication adherence (0.75), and the conclusion that policies facilitating integration of contingency management into community services are sorely needed.
  12. Roll JM, Petry NM, Stitzer ML, et al. Contingency management for the treatment of methamphetamine use disorders. American Journal of Psychiatry. 2006;163(11):1993–1999. NIDA Clinical Trials Network multisite randomized trial in 113 participants: 12 weeks of usual treatment versus usual treatment plus escalating prize-draw contingency management, with equivalent retention but significantly more drug-negative samples and longer abstinence in the contingency management group (five weeks versus three).
  13. University of Liverpool — HIV Drug Interaction Checker. The free, continuously updated interaction reference used by HIV clinicians worldwide, covering antiretrovirals against opioid agonists including buprenorphine and methadone, benzodiazepines, recreational and club drugs, and comorbidity medications, with downloadable interaction charts and prescribing resources.
  14. National Institute on Drug Abuse — To Save Lives, We Must Dismantle Stigma at the Intersection of HIV and Methamphetamine Use. NIDA analysis citing a 2020 JAIDS study finding one-third of new HIV transmissions among sexual and gender minorities who have sex with men occurred in people who regularly use methamphetamine; increasing methamphetamine use among Black and Hispanic men who have sex with men; evidence that methamphetamine may increase vulnerability to acquiring HIV and contribute to disease progression; Sarit Golub on why risk-focused messaging instills fear and shame; the needs methamphetamine meets for connection, pleasure and confidence; and harm reduction's "meeting people where they are" philosophy applied to HIV and substance use care.
  15. Centers for Disease Control and Prevention — Stop Overdose: What You Can Do to Test for Fentanyl. CDC's practical harm reduction guidance: fentanyl test strip method and interpretation, documented limitations including analog detection and interference from methamphetamine, MDMA and diphenhydramine; naloxone availability in all 50 states via pharmacies without a prescription, community programs and syringe services programs; guidance against mixing drugs and against relying on a familiar source; never use alone; and the 24/7 National Helpline at 800-662-HELP (4357) with treatment search at findtreatment.gov.
  16. U.S. Food and Drug Administration — FDA Approves First Over-the-Counter Naloxone Nasal Spray. March 2023 approval of 4 mg Narcan nasal spray for nonprescription use, sellable directly to consumers in drug stores, convenience stores, grocery stores, gas stations and online; naloxone described as the standard treatment for opioid overdose; and context of more than 101,750 reported fatal overdoses in the 12 months ending October 2022.
  17. Substance Abuse and Mental Health Services Administration — Overdose Prevention and Response Toolkit. SAMHSA's federal guidance on preventing and responding to overdose, including the role of opioid overdose reversal medications such as naloxone and nalmefene and the response sequence of checking for a response, administering reversal medication, calling 911 and supporting breathing; issued alongside SAMHSA's harm reduction framework emphasizing leadership by people with lived and living experience, low-barrier non-coercive access, and any positive change as defined by the person.
  18. Binswanger IA, Stern MF, Deyo RA, et al. Release from prison — a high risk of death for former inmates. New England Journal of Medicine. 2007;356(2):157–165. Retrospective cohort of 30,237 people released from Washington State prisons 1999–2003 linked to the National Death Index: overall mortality 777 per 100,000 person-years and adjusted risk of death 3.5 times that of other state residents; in the first two weeks after release, risk of death 12.7 times higher (95% CI 9.2–17.4) with relative risk of drug overdose death of 129 (95% CI 89–186); overdose the leading cause of death. Note: the published title uses period terminology that RiseUpToHIV does not use in its own prose; the citation is preserved verbatim.
  19. Florida Statutes § 381.0038 — Education; sterile needle and syringe exchange programs. The operative Florida law: county commission authorization by ordinance, letter of agreement with the Department of Health, county health department involvement and the list of eligible operating entities; the one-to-one exchange requirement; required education, counseling, referral, screening and emergency opioid antagonist provisions with a 72-hour referral window extendable in rural counties; the prohibition on collecting personal identifying information; annual August 1 reporting and October 1 statewide compilation; the exemption of program-related needle possession, distribution and exchange from Florida drug law; and subsection (4)(f) prohibiting the use of state, county or municipal funds to operate a program.
  20. Florida Department of Health — Infectious Disease Elimination Act (IDEA): Exchange. The state health department's official summary of the June 27, 2019 statewide law: county authorization requirements, eligible operating entities, the one-to-one exchange rule, required educational materials, on-site counseling and referral obligations, HIV and viral hepatitis screening, emergency opioid antagonist kits, and the August 1 annual reporting requirements.
  21. University of Miami Miller School of Medicine — IDEA Exchange: About Us. Program documentation for Florida's first legal syringe services program, opened December 1, 2016 on World AIDS Day: anonymous syringe exchange, HIV prevention, testing and treatment, hepatitis C testing and treatment, substance use disorder treatment, wound care, medication management, appointment reminders, and peer navigation for care and social services including housing and health insurance. Clinic-level service detail, including gender-affirming care, wound care, abscess drainage, women's care and MOUD refills, is listed on the Miller School's IDEA Exchange Clinic page.
  22. HIV.gov — #NHASeverywhere: Bridging the Gap, The Intersection of HIV & Substance Use. Federal profile of the IDEA Exchange as a comprehensive syringe services program in Miami, its harm reduction mission and service list, its alignment with National HIV/AIDS Strategy objective 3.3.1 on public leadership opportunities for people with or at risk for HIV, and the full quotation from founder and medical director Hansel Tookes, MD, MPH, about peer navigator Chetwyn "Arrow" Archer.