The short answer: sexual side effects, reduced desire, difficulty reaching orgasm, and erectile difficulty, are common with SSRIs and some other antidepressants, and they are a frequent reason people quietly stop taking them. But stopping abruptly is genuinely risky, and there are better options. This is a conversation to have with your prescriber, not a decision to make alone.
How antidepressants affect sex
The medicines most associated with sexual side effects are the SSRIs (selective serotonin reuptake inhibitors), among the most commonly prescribed antidepressants. By raising serotonin, they can dampen the sexual response in several ways: lower desire, delayed or absent orgasm, reduced genital sensation, and erectile difficulty. These effects are dose-related for some people and can appear early in treatment. Not everyone gets them, but they are common enough that prescribers should raise them, and often do not.
Just how common these effects are is easy to underestimate, because they are so rarely discussed. Estimates vary widely depending on how people are asked, but studies that ask directly rather than waiting for patients to volunteer the information suggest sexual side effects affect a large proportion of people on SSRIs, in some studies more than half. The NHS information on antidepressants lists reduced sex drive and difficulty reaching orgasm among the recognised effects, which is worth knowing simply so you understand this is a documented feature of the medicines rather than something unusual about you. It also means it is entirely reasonable to expect your prescriber to take it seriously.
Different antidepressants carry different levels of risk. Within the SSRI group the effect is broadly a class feature, but some medicines outside that group, working on other brain chemicals, are much less likely to interfere with sexual function. This matters because it means switching is often a realistic option rather than a choice between your mental health and your sex life. The point is not to memorise which drug is which, but to know that the range exists, so you can ask your prescriber whether a lower-risk alternative would suit you.
The depression factor
It is worth separating two things that get tangled. Depression and anxiety themselves reduce libido and can cause erectile difficulty, so some of what feels like a medicine side effect may be the underlying condition. Sometimes, as mood improves on treatment, sexual function improves with it. Other times the medicine adds its own effect on top. Telling these apart is part of why the conversation with a prescriber matters, the answer shapes what to do next.
Options to discuss
There is usually more than one way forward, and a prescriber can weigh them with you:
- Waiting a little longer, as some side effects ease over the first weeks.
- Adjusting the dose, where the effect is dose-related and mood is stable.
- Switching to an antidepressant less associated with sexual side effects, of which there are several.
- Timing or other strategies for specific problems, decided case by case.
- Treating erectile difficulty directly where appropriate, which a prescriber can assess.
The right option depends on your mental health as much as your sexual function, the priority is keeping your depression or anxiety well treated while improving quality of life, not trading one problem for another.
Erectile difficulty specifically
Where the main issue is erectile difficulty rather than desire or orgasm, PDE5 inhibitors such as sildenafil or tadalafil can sometimes be used alongside an antidepressant, and a prescriber will assess whether that is appropriate for you. This can allow the antidepressant to keep doing its job while addressing the erectile side effect directly. As always, it depends on your health, other medicines and the nitrate rule that applies to everyone.
The distinction between a desire problem and an erection problem matters here, and is covered in testosterone and libido.
Raising it without embarrassment
Sexual side effects are underreported partly because people find them awkward to mention and partly because prescribers do not always ask. But they are a recognised, legitimate part of reviewing antidepressant treatment, and they affect whether people stick with medicines that are helping their mental health. Raising it is not trivial or vain, it is exactly the kind of thing your prescriber needs to know to get your treatment right.
It also helps to go into that conversation with a clear picture of what has changed. Try to notice whether the issue is mainly desire, arousal or orgasm, when it started relative to the medicine, and whether it happens in every situation or only some. That detail helps a prescriber separate a medicine effect from the psychological and physical threads that often run alongside it. Depression, relationship strain and physical health frequently overlap, and our overview of the common causes of erectile difficulty sets out why more than one thing is usually involved. The more precisely you can describe the change, the more targeted the fix can be.
None of this means antidepressants are a bad choice. For many people they make a real difference, and untreated depression carries far greater risks than a treatable side effect. UK treatment guidance from NICE on depression in adults stresses reviewing treatment regularly and tailoring it to the individual, and sexual function is a legitimate part of that review. The goal is to keep your mental health well treated while making the treatment liveable, and that is a balance a prescriber is well placed to strike with you rather than one you should try to manage by quietly stopping.
