Never stop, pause, reduce, or change a prescribed medicine because of anything on this page. Some of the medicines listed here are dangerous to stop suddenly, and the condition being treated does not pause while you experiment. Everything here exists to make your next conversation with a prescriber more specific — not to replace it.
Frequently reportedOther mental-health medicines
Antipsychotic medicines and sexual side effects
Blocking dopamine lifts prolactin, and a sustained prolactin rise suppresses the sex hormones that drive desire, arousal, and lubrication. The size of that rise differs sharply between drugs in this class — risperidone, paliperidone, and amisulpride raise it most, aripiprazole least — so the class label matters less here than the specific medicine. Sedation and metabolic effects add their own layer.
What the rating means: Sexual effects are among the better-documented effects of this class. Frequent does not mean inevitable — plenty of people take these with no change at all.
What is reported
Editorial categories, not percentages. Published rates vary enormously depending on study design and on whether anyone thought to ask the question.
Wanting sex less often, or losing the spontaneous interest that used to arrive on its own. This is the effect people most often assume is psychological and most often is not only psychological.
The body responds less, or much more slowly, even when the interest is there. Blood flow, nerve signalling, and hormone levels all feed this, and medicines can act on any of the three.
Erections that are slower, softer, or do not hold. Because this depends on blood vessels and nerves, it can also be an early signal of something cardiovascular — which is why it is worth a clinical conversation rather than only a product.
Less natural lubrication, a tight or raw feeling, or discomfort that arrives during rather than before sex. Medicines cause this either by drying mucous membranes generally or by lowering oestrogen.
Much less fluid, no fluid at all, or ejaculation that goes backwards into the bladder. Alarming the first time it happens and, with some classes, an expected and harmless mechanical effect.
Arousal works but orgasm does not arrive. When this starts within weeks of a new medicine and had never happened before, the timing itself is information.
Sex stops happening because there is nothing left in the tank by the time there is an opportunity. A real medicine effect, not a motivation problem.
Timing and reversibility
Prolactin rises within days to weeks of starting or of a dose increase and stays raised while the medicine continues. Because prolactin is measurable, this is one of the few sexual side effects that can be checked with a blood test rather than guessed at.
Each of these has its own sexual effects, separate from the medicine’s. Working out which half you are dealing with is usually the whole question.
Low testosteroneTestable, treatable, and frequently caused by something else on this site.
Raised prolactinSuppresses desire and arousal, and is measurable with one blood test.
Parkinson's diseaseMovement, autonomic, and dopamine effects — in both directions.
What to ask the person who prescribed it
Could my prolactin level be checked?
Do different medicines in this class differ in this effect, and does that matter for me?
Have my periods, breast changes, or milk production changed — is that connected?
Things that help without touching the prescription
A regular vaginal moisturiser plus a glycerin-free lubricant for the dryness side of it.
Bringing this up is not asking to come off treatment — it is asking whether the same treatment can be delivered with fewer effects.
Care signal
Periods stopping, unexpected breast milk, or breast tenderness alongside these medicines are signs of a raised prolactin level and deserve a prompt appointment rather than a wait-and-see.
Frequently reported for this class. Blocking dopamine lifts prolactin, and a sustained prolactin rise suppresses the sex hormones that drive desire, arousal, and lubrication. The size of that rise differs sharply between drugs in this class — risperidone, paliperidone, and amisulpride raise it most, aripiprazole least — so the class label matters less here than the specific medicine. Sedation and metabolic effects add their own layer.
Which sexual side effects are most reported with antipsychotic medicines?
The effects reported most often are lower sexual desire, arousal is slower or harder to reach, difficulty getting or keeping an erection, and fatigue or sedation getting in the way. Reported does not mean guaranteed — plenty of people take these medicines with no change at all, and published rates vary widely depending on whether anyone asked the question.
How soon would antipsychotic medicines cause a change, and does it reverse?
Prolactin rises within days to weeks of starting or of a dose increase and stays raised while the medicine continues. Because prolactin is measurable, this is one of the few sexual side effects that can be checked with a blood test rather than guessed at.
What should I do if I notice this while taking antipsychotic medicines?
No. Never stop, pause, or reduce a prescribed medicine on your own because of a side effect — several medicines on this site are dangerous to stop suddenly, and the condition being treated does not pause while you experiment. Bring the observation to the person who prescribed it; a dose review, a different preparation, or a different approach may all be options, and only they can weigh them against what the medicine is doing for you.
What should I ask about antipsychotic medicines at my appointment?
A specific question gets a better answer than a general one. For this class: Could my prolactin level be checked? Do different medicines in this class differ in this effect, and does that matter for me? Have my periods, breast changes, or milk production changed — is that connected?
When is this worth an appointment rather than a wait-and-see?
Periods stopping, unexpected breast milk, or breast tenderness alongside these medicines are signs of a raised prolactin level and deserve a prompt appointment rather than a wait-and-see.
Educational information about categories of medicine only — not medical advice, not a diagnosis, and not a statement about your prescription. It does not cover doses, interactions between medicines, or alternatives, and it cannot know what else is going on with your health. Sexual symptoms often have more than one cause at once. Pain, bleeding, or a symptom that is new and unexplained always deserves assessment.