Blood pressure medications
The largest single category, and the one where alternatives are most readily available.
- Thiazide diuretics (hydrochlorothiazide, chlortalidone) have among the clearest links to ED of any blood pressure drug.
- Older beta blockers (atenolol, metoprolol, propranolol) are well associated with it. Newer ones — nebivolol in particular, which increases nitric oxide — appear considerably kinder, and carvedilol sits somewhere in between.
- Spironolactone has anti-androgen activity and can cause ED along with breast tenderness.
The classes that appear neutral or even mildly helpful are ACE inhibitors (ramipril, lisinopril), ARBs (losartan, valsartan — some studies suggest a modest improvement) and calcium channel blockers (amlodipine). If you are on a thiazide or an older beta blocker and developed ED, asking about a move to an ARB is a reasonable and specific question.
Antidepressants
Sexual side effects affect a substantial share of people on SSRIs — commonly cited figures run from a quarter to more than half — and cover reduced desire, difficulty with erections, and delayed or absent orgasm.
This is genuinely difficult territory, because untreated depression itself causes ED. The goal is not to stop treatment but to find a drug that treats the depression without this cost.
- Higher rates: paroxetine, sertraline, fluoxetine, citalopram, escitalopram, venlafaxine.
- Lower rates: bupropion, which is sometimes added alongside an SSRI specifically to offset sexual side effects, and mirtazapine.
- Vortioxetine has some evidence of a lower burden than older SSRIs.
Prostate and hair loss drugs
Finasteride and dutasteride block the conversion of testosterone to DHT. They shrink the prostate and slow hair loss, and in a minority of men they cause ED, low libido and reduced ejaculate. Most cases resolve after stopping; a contested minority report symptoms persisting, which is worth knowing before starting rather than after.
Alpha blockers for prostate symptoms (tamsulosin, alfuzosin) do not usually cause ED but frequently cause retrograde ejaculation — orgasm with little or no semen. Harmless, but alarming if nobody warned you.
Other common causes
| Drug or class | Used for | What to ask about |
|---|---|---|
| Older antihistamines (diphenhydramine) | Allergies, sleep | Newer non-sedating alternatives |
| H2 blockers (cimetidine) | Reflux | A different acid suppressant |
| Antipsychotics (risperidone, haloperidol) | Mental health | Agents with less prolactin effect |
| Opioids | Chronic pain | Testosterone suppression is common with long-term use |
| Anticonvulsants (carbamazepine, phenytoin) | Epilepsy, nerve pain | Alternatives within the class |
| Chemotherapy agents | Cancer | Timing and recovery expectations |
How to raise it
Be specific and bring the timeline. Something like: "I started hydrochlorothiazide in March and the erection problems began around May. Is there an alternative that is less likely to do this?" gives your prescriber something concrete to act on.
Expect a trial period. A switch takes several weeks to show its effect, and the new drug also has to control the original condition properly. That is normal, not a sign it is not working.