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PrEP in Houston: How to Get It, What It Costs and Who It Is For

Updated · Sources are cited in the text

PrEP in Houston: How to Get It, What It Costs and Who It Is For

This page is general health information, not medical advice. It cannot tell you whether you have an infection. A clinician can, and the testing options on this site are a good place to start.

PrEP is medicine that lowers the chance of getting HIV. Many people in Houston have questions about it. Who is it for? Where do you start? What does PrEP cost without insurance?

This guide covers the types of PrEP, the visit and the lab tests, and the local clinics that offer it. It also covers insurance rules and the programs that can lower the price.

You do not need to have everything figured out before you call a clinic. Staff there can walk you through the steps.

Key takeaways

  • PrEP stands for pre-exposure prophylaxis. A clinician prescribes it to lower the chance of getting HIV. The CDC says daily oral PrEP reduces the risk of HIV from sex by about 99 percent when taken as prescribed.
  • PrEP comes as a daily pill and as a long-acting injection. On-demand use is a separate, narrower topic to raise with a clinician.
  • PrEP does not protect against other STIs. Regular STI testing is part of good PrEP care.
  • Houston Health Department health centers offer PrEP by appointment at 832-395-9800. Harris County Public Health says services at its Antoine Clinic are free.
  • Under the Affordable Care Act, most private plans must cover PrEP that the USPSTF recommends. Check your own plan for the details.
  • Your cost depends on your coverage and on where you go. The clinics below can help you find a lower-cost option.

In this guide

  1. What PrEP is and how well it works
  2. Who PrEP is for
  3. Types of PrEP: daily, on-demand and injectable
  4. How to get PrEP: the visit and the lab tests
  5. PrEP clinics in Houston
  6. What PrEP costs and how to pay for it
  7. Staying on PrEP, privacy and other prevention tools
  8. Sources

What PrEP Is and How Well It Works

PrEP is a prevention tool. A person who does not have HIV takes it to lower their chance of getting HIV. A clinician prescribes it and follows up with you while you use it.

How PrEP works

PrEP medicines are antiretroviral drugs. They are the same kind of drugs used in HIV treatment. If HIV enters the body, the medicine in your system makes it much harder for the virus to take hold.

How well it works

The CDC says daily oral PrEP reduces the risk of getting HIV from sex by about 99 percent when taken as prescribed. For people who inject drugs, the CDC says the reduction is at least 74 percent. The key phrase is "as prescribed." PrEP works best when the medicine is in your body consistently.

What PrEP does not do

PrEP protects against HIV only. It does not prevent chlamydia, gonorrhea, syphilis, herpes or HPV. The CDC STI Treatment Guidelines (2021) recommend regular STI testing for people who use PrEP. Condoms still lower the chance of other STIs.

Why PrEP matters in Houston

CDC surveillance data for 2024 list 1,262 new HIV diagnoses in Harris County among people aged 13 and older. That is a rate of 30.7 per 100,000. The Houston Health Department reports 1,343 new diagnoses for Houston and Harris County in 2023, a rate of 27.5 per 100,000. The two figures come from different years and sources, so they are not a trend. They do show that HIV prevention is a real local need.

Who PrEP Is For

PrEP is for people who do not have HIV and who may be exposed to it. The CDC describes who should talk with a clinician about it. A clinician is the right person to decide what fits you.

Sexual exposure

The CDC's clinical guidance says to consider PrEP for sexually active adults and adolescents who have had anal or vaginal sex in the past six months and who:

  • have a partner who has HIV, especially if that partner's viral load is not suppressed,
  • have had a bacterial STI in the past six months, or
  • do not use condoms consistently with partners whose HIV status they do not know.

This applies to people of every gender and sexual orientation. PrEP is not tied to one group of people.

Injection drug use

The CDC also describes PrEP for people who inject drugs and who share needles or other equipment, or who have a partner with HIV. Houston has syringe and harm reduction services too. A PrEP clinician can tell you about them.

You can simply ask

The CDC guidance also says clinicians should prescribe PrEP to anyone who asks for it, even if the person does not describe a specific risk. Your reasons are your own. A good clinic will not ask you to justify them.

If your partner has HIV

The CDC says a person with HIV who takes treatment and keeps an undetectable viral load does not pass HIV to sex partners. Some couples still choose PrEP, for example while a partner is starting treatment. That is a conversation for you, your partner and your clinicians.

Types of PrEP: Daily, On-Demand and Injectable

PrEP comes in more than one form. Which one is available to you depends on your health, your insurance and the clinic. This section describes the types. It does not give doses, and a clinician sets any schedule.

Daily oral PrEP

Daily oral PrEP is a pill a clinician prescribes. It is the longest-used form and the one most people mean when they say "PrEP." The CDC says it takes time for the medicine to reach protective levels, and that time differs by the type of sex. Ask your clinician when you can count on protection.

On-demand PrEP, sometimes called 2-1-1

On-demand dosing, often called "2-1-1," means taking PrEP around sex instead of every day. It has been studied in men who have sex with men. The CDC does not describe it as an option for most people. It is not FDA-approved. The CDC says daily dosing has the strongest evidence for people who have vaginal sex, and for people who inject drugs.

If on-demand dosing interests you, raise it with a clinician. Do not start it on your own. A clinician can tell you whether it fits your situation and whether the clinic prescribes it.

Long-acting injectable PrEP

Injectable PrEP is given by a clinician in a clinic instead of taken as a daily pill. The FDA first approved an injectable form in 2021. The FDA approved a second long-acting injectable in 2025. Injectable PrEP can suit people who find a daily pill hard to keep up with.

The Houston Health Department says it offers both daily oral and long-acting injectable PrEP at its health centers. Availability can change, so ask when you call.

Side effects

Some people have mild stomach upset or headaches when they first start oral PrEP. These often fade. Injectable PrEP can cause soreness where the shot is given. A clinician monitors your kidney function and other labs while you take PrEP. Tell the clinic about anything that worries you, and do not stop on your own without asking.

How to Get PrEP: The Visit and the Lab Tests

Getting PrEP follows a few steps. It is a prescription medicine, so you need a visit with a clinician.

Step 1: Choose where to go

You can go to a health department clinic, a community health center or a private doctor. The next section lists Houston places that offer PrEP. Call ahead. Ask whether you need an appointment, what to bring and whether the clinic can help with cost.

Step 2: Talk with a clinician

The clinician will ask about your health, your medicines and your sexual and drug-use history. These questions are medical, not moral. Answer as honestly as you can, because your answers help the clinician choose the right option.

Step 3: Get tested first

The CDC says people should have a negative HIV test before starting PrEP. A clinician orders it. Starting PrEP while HIV is present and untreated can cause problems, so the test comes first.

The CDC explains that different HIV tests detect HIV at different times after exposure:

  • An antigen/antibody test on blood from a vein can usually detect HIV 18 to 45 days after exposure.
  • An antigen/antibody fingerstick test can usually detect HIV 18 to 90 days after exposure.
  • Antibody tests can take 23 to 90 days to detect HIV.

If you have had a recent possible exposure, tell the clinician. They can pick the right test and explain what a result can and cannot tell you. A test result is information for you and your clinician, not a verdict.

Step 4: Other baseline labs

The CDC says clinicians should also check:

  • kidney function, because some oral PrEP medicines are cleared by the kidneys,
  • hepatitis B status, because some PrEP medicines also act on that virus,
  • hepatitis C, where it applies, and
  • a pregnancy test, where it applies.

The CDC STI Treatment Guidelines (2021) also recommend screening for other STIs. That can include syphilis, gonorrhea and chlamydia, depending on your sexual practices. Many people ask whether a clinic can do all of this in one visit. Sometimes it can, and sometimes results come back later. Ask when you book.

Step 5: Get the prescription and a plan

If PrEP is a good fit, the clinician prescribes it. You will also leave with a follow-up plan. The CDC describes follow-up visits about every three months for oral PrEP. These visits include repeat HIV testing, STI screening and a check on how you are doing with the medicine. Injectable PrEP has its own visit plan that the clinic will explain.

Same-day starts

Some clinics can start PrEP the same day. Legacy Community Health says it offers same-day walk-in PrEP. Ask the clinic what its process is and what to expect at the first visit.

PrEP Clinics in Houston

These are Houston places that list PrEP among their services. Hours, walk-in policies and appointment rules can change, so call before you go.

Houston Health Department health centers

The Houston Health Department says PrEP (daily oral and long-acting injectable) and nPEP are available at each of its health centers. Appointments for PrEP and nPEP are made at 832-395-9800. Staff help with co-pay and assistance programs. Costs follow a sliding scale, according to the health department's clinic pages.

  • Northside Health Center: 8504 Schuller Rd., Houston, Texas 77093. Phone 832-393-4220. Clinic page.
  • Sharpstown Health Services: 6201 Bonhomme Rd., 3rd Floor, South Tower, Houston, Texas 77036. Phone 832-393-4220. Clinic page.
  • Sunnyside Health and Multi-Service Center: 4410 Reed Rd., Houston, Texas 77051-2718. Phone 832-393-4220. Clinic page.

The health department says its sexual health clinics became appointment-encouraged on September 1, 2026. Walk-ins are still seen as capacity permits, but a visit without an appointment is not guaranteed. Booking ahead is the safer plan. You can read more on the Houston Health Department PrEP page.

Harris County Public Health Antoine Clinic

Harris County Public Health lists PrEP prescriptions at its Antoine Clinic, 5815 Antoine Dr, Houston, TX 77091. The phone number is 832-927-7350. The county says its services are free and that uninsured people are welcome. The posted hours are Monday through Thursday, 8am to 7pm, closed Friday, and every other Saturday, 8am to 2pm. The county's own page notes you should confirm hours before you visit. The clinic also lists testing for HIV, syphilis, gonorrhea and chlamydia, and STI treatment. See the Harris County Public Health HIV and STI page.

Legacy Community Health, Montrose

Legacy Community Health, at 1415 California St., Houston, TX 77006, lists PrEP, PEP and doxy-PEP among its services. The clinic phone is (832) 548-5100. Legacy says it offers same-day PrEP on a walk-in basis, with eligibility specialists who help people find low-cost or no-cost PrEP. For PrEP cost questions, Legacy lists (713) 814-3300. Legacy says its services are open to all regardless of ability to pay. See the Legacy HIV and STD services page.

Avenue 360 Health & Wellness, Heights

The Texas Department of State Health Services (DSHS) lists Avenue 360 Heights, 2150 West 18th Street, Suite 300, Houston, TX 77008, as a PrEP provider. The phone number is (713) 426-0027. Avenue 360 offers free walk-in rapid HIV, hepatitis C and syphilis testing on weekdays. Its pages do not describe PrEP pricing, so ask the clinic. See the DSHS list of PrEP providers in Texas.

Places that test but do not prescribe PrEP

The Montrose Center, at 401 Branard Street, Houston, Texas 77006, offers free walk-in rapid HIV, hepatitis C and syphilis testing. It says it does not offer PrEP. A visit there can still be a good first step. A staff member can point you toward a PrEP clinic. The phone number is 713-529-0037.

Not sure where to start?

The Texas DSHS keeps a statewide list of PrEP providers, and the CDC runs a testing locator at gettested.cdc.gov. For a longer list of local testing sites, see our guide to STD and HIV testing in Houston.

What PrEP Costs and How to Pay for It

Cost is a common worry, and it is a fair one. The honest answer is that it depends. Your insurance, your income and the clinic you choose all play a part. Here is how the pieces fit together.

What makes up the cost of HIV PrEP

PrEP has a few separate costs:

  • the visits with a clinician,
  • the lab tests, at the start and during follow-up, and
  • the medicine itself.

A clinic can charge for each part differently. When you call, ask about all three. Public health clinics often bundle or reduce the costs.

Insurance and the Affordable Care Act

The U.S. Preventive Services Task Force (USPSTF) gives PrEP a Grade A recommendation for people at increased risk of HIV. Under the Affordable Care Act, most private health plans must cover services with an A or B grade without cost-sharing. Federal guidance has also said that the labs and visits tied to PrEP can be covered under that rule. In practice, details vary by plan. Some plans require approval first, and some limit which versions of PrEP they cover.

Call the number on your insurance card and ask:

  • Is PrEP covered as a preventive service with no copay?
  • Are the visits and labs covered the same way?
  • Is the injectable form covered?
  • Which clinics and pharmacies are in network?

If you have Medicaid or Medicare, coverage rules are set by those programs, so check with them or with the clinic. This guide does not state those rules.

If you do not have insurance

You still have options in Houston:

  • Harris County Public Health says services at its Antoine Clinic are free, and that people without insurance are welcome.
  • Houston Health Department centers use a sliding scale. Their staff help with co-pay and assistance programs.
  • Legacy Community Health has eligibility specialists for low-cost or no-cost PrEP. It does not publish a price for a full STI panel, so ask when you call.

The Texas DSHS PrEP provider page notes that DSHS does not run a PrEP drug-assistance program on that page. That means local clinic programs are the main route for help, so ask the clinic.

If you have insurance but a high copay

Clinic staff can often help here too. The Houston Health Department says its staff help with co-pay and assistance programs. Drug makers and some nonprofits also run assistance programs. Ask the clinic's financial or eligibility staff which ones apply to you. Do not pay for a program that promises results. Real assistance programs go through your clinic or pharmacy.

Questions to ask before you book

  • What will the first visit cost, and what will the labs cost?
  • Do you offer a sliding scale or income-based discount?
  • Who helps me with the medicine cost?
  • Do you take my insurance?

If a clinic's page does not list a price, that is normal. Many clinics set the price after they check your coverage and income. A short phone call is the quickest way to get a real answer.

Staying on PrEP, Privacy and Other Prevention Tools

PrEP works best as part of a bigger plan. This section covers follow-up, privacy and how PrEP fits with other tools.

Staying on PrEP

Most people do well on PrEP with a routine. Some people link it to something they already do each day. Others choose the injectable form for that reason. If you miss doses, run out or want to stop, tell your clinician. They can adjust the plan and test you if needed. Stopping and restarting should be a clinical decision, not a guess.

Regular testing is part of PrEP

Follow-up visits include HIV and STI testing. If a test finds a bacterial STI such as chlamydia, gonorrhea or syphilis, the CDC says these infections are curable with treatment from a clinician. If a test finds HIV, a clinician can start treatment right away. HIV is not curable, but it is treatable and manageable. Getting tested regularly is how problems get caught early. For free or low-cost testing in Houston, start with the clinics above or the CDC locator at gettested.cdc.gov.

PrEP, PEP and doxy-PEP

These are different tools:

  • PrEP is taken before possible exposure to HIV.
  • PEP is taken after a possible exposure. The CDC says it should start as soon as possible and within 72 hours. Houston Health Department centers list nPEP, and Legacy lists PEP. If it was recent, call right away.
  • Doxy-PEP is a clinician-prescribed medicine used after sex to lower the chance of certain bacterial STIs. The CDC issued guidance on it in 2024 for specific groups of people. It does not prevent HIV. Legacy Community Health lists doxy-PEP among its services. Ask a clinician whether it applies to you.

Privacy and young people

Texas Family Code Sec. 32.003 says a minor of any age may consent to diagnosis and treatment of a reportable infectious or communicable disease, and parent or guardian consent is not required for that care. The same law lets a physician tell a parent or guardian about the treatment, with or without the minor's consent. So a clinic cannot promise a teen it will never tell a parent. The Houston Health Department also notes that a 2025 Texas law, SB 1188, gives parents and guardians full access to a minor's electronic health record. Whether a clinic can prescribe PrEP to a minor without a parent is a question for that clinic. Ask before the visit, and ask how the clinic handles records and billing.

Pregnancy and PrEP

Texas Health and Safety Code Sec. 81.090 calls for syphilis and HIV testing at certain points in pregnancy, including the first prenatal visit. If you are pregnant, trying to become pregnant or breastfeeding, talk with your clinician about PrEP. Do not stop or start medicine on your own.

Other ways to get tested in Houston

Harris County Public Health runs Testing123, a free mobile service for HIV and syphilis testing. Staff come to a location you choose in Harris or Montgomery County. The county lists a text number of (281) 962-8378. See the Harris County End HIV testing page.

A simple next step

If you are thinking about PrEP, you can make one call today. Call 832-395-9800 for a Houston Health Department appointment. You can also call the Harris County Public Health Antoine Clinic at 832-927-7350, or Legacy at (832) 548-5100. Say you would like to talk about PrEP. That is enough to begin.

Sources