Medications (and Supplements) That May Reduce Testosterone and Libido in Men
- vitalpathnp
- 6 days ago
- 4 min read
Low libido, erectile changes, fatigue, and “low drive” aren’t always psychological—and they aren’t always “just aging.” Certain medications can affect hormone signaling, blood flow, neurotransmitters, and sleep quality, which can reduce libido and sometimes lower testosterone. If symptoms started after a new prescription (or dose change), a medication and supplement review is a smart first step.
Related reads (Men’s Hormone Health)
If you’re trying to connect symptoms with labs and next steps, these may help:
Testosterone Labs for Men: Total vs Free, SHBG, and What They Mean
Testosterone for Men: Benefits, Evidence, and What to Know (Cream vs Injection + Safety)
CBC & Hematocrit on Testosterone: Why It’s the #1 Safety Lab (and What High Levels Can Mean)
How Testosterone Negative Feedback Loop Works in Men (Simple, Accurate Explanation)
How medications can affect testosterone and libido
Some medications can lower testosterone production directly by affecting the brain-to-testes signaling pathway (the HPG axis). Others don’t lower testosterone itself, but still reduce libido or sexual function by impacting arousal, orgasm, blood flow, mood, or sleep.
If you’re not sure whether your symptoms sound more like “low T,” lab timing issues, or something else, start with Why Is My Testosterone Low? (Men). And if you want to understand what your numbers actually mean, see Testosterone Labs for Men: Total vs Free, SHBG, and What They Mean.
Antidepressants (SSRIs/SNRIs)
SSRIs and SNRIs can be extremely helpful for depression and anxiety, but they’re also well-known for sexual side effects in men, including lower libido, delayed orgasm, and erectile dysfunction.
Examples: sertraline, fluoxetine, escitalopram, citalopram, paroxetine, fluvoxamine, venlafaxine, desvenlafaxine, duloxetine.
Opioid pain medications
Long-term opioid use is associated with suppressed testosterone production in some men. This can show up as low libido, erectile dysfunction, fatigue, low mood, and reduced muscle mass.
Examples: oxycodone, hydrocodone, morphine, methadone, fentanyl, tramadol, codeine, buprenorphine.
5-alpha reductase inhibitors (hair loss and enlarged prostate)
These medications lower DHT (a potent androgen). Some men notice reduced libido, erectile dysfunction, or mood changes after starting them.
Examples: finasteride, dutasteride.
Blood pressure medications (some types)
Not all blood pressure medications affect sexual function, but erectile changes are reported more often with certain classes. High blood pressure itself can also impair erections by affecting blood flow, so the goal is not to stop treatment—it’s to find the best fit.
Examples (commonly implicated): hydrochlorothiazide, chlorthalidone, propranolol, metoprolol, atenolol.
Medications that can raise prolactin
Elevated prolactin can suppress testosterone signaling and reduce libido. Some antipsychotic medications are more likely to raise prolactin, and a few non-psychiatric medications can as well.
Examples: risperidone, paliperidone, haloperidol, metoclopramide.
Sedating medications that can reduce arousal and sexual function
Sometimes libido drops because sedation, blunted arousal, or reduced sensation becomes the limiting factor—even if testosterone is normal.
Examples: alprazolam, lorazepam, clonazepam, diazepam, zolpidem, eszopiclone, diphenhydramine, doxylamine, trazodone, gabapentin, pregabalin.
Hormone-altering therapies (often intentionally lower testosterone)
Some therapies are designed to reduce testosterone signaling for specific medical indications. These can significantly reduce testosterone and libido.
Examples: leuprolide, goserelin, degarelix, relugolix, spironolactone, ketoconazole (higher/long-term dosing), anabolic steroid cycles (can suppress natural production).
If you’re considering testosterone therapy (or already on it) and want a balanced overview of benefits and risks, read TRT Safety: Benefits, Risks, and Who Should Be Cautious.
Supplements and OTC products that may reduce libido or testosterone (in some men)
Supplements are “natural,” but they can still affect hormones, neurotransmitters, and sexual function—especially at higher doses or when combined with prescriptions.
Saw palmetto
Because it may influence DHT pathways, some men report libido changes. Evidence is mixed, but it’s a reasonable item to review if symptoms started after using it.
High-dose peppermint or spearmint (tea/extracts)
Some studies suggest anti-androgen effects in certain contexts. Human data in men is limited, but if intake is high and symptoms are new, it’s worth mentioning.
Licorice root (especially concentrated extracts)
Licorice can affect steroid metabolism and hormones. High or chronic intake may contribute to hormonal shifts in some people.
“Sleep” supplements that cause sedation (indirect libido impact)
Even if they don’t lower testosterone directly, they can reduce arousal and interest.
Examples: high-dose melatonin, kava, valerian.
Prohormones and “test boosters” with undisclosed ingredients
Some OTC products are contaminated or spiked (not always obvious on the label). These can disrupt natural testosterone production and sexual function. If libido or testosterone changed after starting a new “booster,” stop it and discuss with a clinician.
What to do next if you suspect a medication or supplement is contributing
Do not stop prescription medications abruptly. Instead, bring a clear summary to your clinician:
When symptoms started (and what changed around that time)
A full list of prescriptions, OTC meds, and supplements
Sleep quality, stress level, alcohol/cannabis use, and training volume
Any new depression/anxiety symptoms (these matter too)
If you want a broader symptom-based checklist (so you’re not assuming it’s “just testosterone”), see Low Libido in Men: Common Causes (Not Just Testosterone).
Labs to discuss with your clinician (men)
Depending on your symptoms and history, your clinician may consider checking morning total testosterone, free testosterone, SHBG, LH, FSH, prolactin, thyroid labs, and metabolic markers. The goal is to identify whether this is a medication side effect, a hormone signaling issue, or a broader metabolic/sleep/stress picture.
Schedule a FREE discovery call
If you’re dealing with low libido, fatigue, or ED and want a clinician-led plan, schedule a FREE discovery call:
This article is for education only and not medical advice. Do not stop or change prescription medications without medical guidance.
Sara Levin, NP-C is the owner and medical director of Vital Path Medicine, a virtual practice serving patients in AZ,CO,FL, IA,MA,NM,NV, OR,UT,DC. She has 15+ years of experience in ER, urgent care, functional medicine, and medical weight loss. Learn more at Vital Path Medicine https://www.vitalpathmedicinellc.com/