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Answer · Testosterone Therapy

Can I use cannabis while on TRT?

Short answer

Cannabis is not among the drug interactions listed on testosterone labels, so occasional use does not stop TRT from working. Research on THC and testosterone itself is mixed, with some studies finding lower levels and others higher. The bigger concerns are smoke, which harms the lungs and is tied to heart risk, and safety around procedures, so tell your provider how and how often you use it.

By the Ultimate Male team · Updated October 8, 2026

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Does cannabis interact with testosterone?

Not in the way a drug interaction is usually meant. The drug interactions section of the Depo-Testosterone label lists oral blood thinners, oxyphenbutazone and insulin, not cannabis. That does not make cannabis irrelevant to your treatment; the effects that matter run through your heart, lungs, fertility and safety around procedures.

Does THC lower testosterone?

The evidence is mixed and mostly old or observational. A 1974 study in the New England Journal of Medicine reported lower plasma testosterone after chronic intensive marijuana use. A much larger 2015 Danish study of 1,215 young men found the opposite pattern for hormones: men who smoked marijuana had higher testosterone, in the same range as cigarette smokers.

On TRT, this question matters less than it seems, because most of your testosterone comes from the medicine. Your level mainly reflects your dose and the timing of your blood draw. Our article on cannabis, testosterone and erections looks at the sexual side of the question.

Is smoking cannabis harder on your body than edibles?

For your lungs, yes, and possibly for your heart. The CDC explains that cannabis smoke contains many of the same toxins, irritants and carcinogens as tobacco smoke, can scar lung tissue and damage small blood vessels, and raises the risk of bronchitis, cough and mucus. Edibles avoid the smoke entirely.

On the heart, the American Heart Association’s scientific statement on cannabis concluded that many of the concerning effects of cannabis involve cardiovascular disease, and that they may depend on how it is taken. That matters on TRT, because testosterone labels now warn that treatment can raise blood pressure, and hematocrit is already tracked on treatment.

Way of using Main concern on TRT
Smoking Lung irritation and damage, possible added heart strain
Vaping Avoids burning plant material but is still inhaled
Edibles No smoke reaching the lungs

Why should you disclose use before procedures?

Because it can change how your care team keeps you safe. The American Society of Regional Anesthesia and Pain Medicine published consensus guidelines on cannabis around surgery covering screening for use, when to postpone elective surgery, and adjusting anesthesia and pain medicines. The panel concluded that surgical patients who use cannabinoids may face a higher risk of problems around the operation.

At a men’s health clinic, that applies to in-office procedures too, from pellet insertion with local numbing to PRP injections. Tell your provider how much you use and when you last used it. Our page on stopping TRT before surgery covers the testosterone side of surgical planning.

Does cannabis matter if you are trying to conceive?

It may. In the Danish study, smoking marijuana more than once a week was linked to a 28% lower sperm concentration, and combining it with other recreational drugs was linked to a 52% lower concentration. Testosterone therapy already suppresses sperm production, so men planning a family should raise both topics together; see our page for men trying to conceive.

How Ultimate Male fits cannabis into your plan

Your provider asks about cannabis the same way they ask about alcohol and supplements: to get the full picture, not to judge. Honest answers help explain a high blood pressure reading, a cough or a sleep problem, and they shape safety planning for any procedure. Our page on drinking alcohol on TRT covers the other common question.

Care starts with a free 10-minute call and on-site labs in San Gabriel or Downey, followed by a one-on-one consultation about testosterone therapy.

questions

Related questions.

Can I use cannabis while on TRT?

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Will cannabis make my testosterone levels harder to read?
Probably not in any major way. On TRT, most of your testosterone comes from the medicine, so your level mainly reflects your dose and timing. Mention regular use anyway so your provider has the full picture.
Is CBD different from THC for this question?
The studies discussed here looked at cannabis use in general, not CBD products on their own, so they do not answer that directly. Treat CBD like any supplement and list it for your provider.
Does it matter if I mix tobacco into joints?
Yes. Tobacco brings its own heart and lung risks on top of cannabis smoke, and smoking is one of the factors that can push hematocrit higher, which is already watched on TRT.

Sources

  1. DEPO-TESTOSTERONE (testosterone cypionate) injection, label · DailyMed, National Library of Medicine
  2. Depression of plasma testosterone levels after chronic intensive marihuana use · New England Journal of Medicine (PubMed)
  3. Association Between Use of Marijuana and Male Reproductive Hormones and Semen Quality: A Study Among 1,215 Healthy Young Men · American Journal of Epidemiology (PubMed)
  4. Medical Marijuana, Recreational Cannabis, and Cardiovascular Health: A Scientific Statement · Circulation, American Heart Association (PubMed)
  5. Cannabis and Lung Health · Centers for Disease Control and Prevention
  6. ASRA Pain Medicine consensus guidelines on the management of the perioperative patient on cannabis and cannabinoids · Regional Anesthesia and Pain Medicine (PubMed)

This page is general education, not medical advice. A licensed clinician must review your symptoms, history and labs before any treatment decision. For chest pain, trouble breathing, signs of stroke or an erection lasting over four hours, call 911.

Keep reading

Answer How long after a TRT dose change should I wait to judge it? For weekly testosterone cypionate, give a dose change about five to six weeks before judging it with labs. Answer How long does a vial of testosterone last? It depends on the vial's strength and your weekly dose. A 10 mL vial at 200 mg/mL holds 2,000 mg, so at 100 mg a week it covers about 20 weeks, while 200 mg a week uses it in about 10. Answer How do TRT refills work? Testosterone is a Schedule III controlled substance, so a single authorization can be refilled no more than five times and never beyond six months from the date it was issued. Cost guide Kyzatrex cost As of October 2026, the maker of Kyzatrex says it is available on a cash-pay basis only, with pricing given by your provider, so insurance and prior authorization do not change what you pay. Cost guide Men's health consultation cost The first step at Ultimate Male, a 10-minute phone call, is free. Cost guide Out-of-network reimbursement for cash-pay care If your plan has out-of-network benefits, you can often file a claim yourself for part of what you paid.

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