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 reportedCancer treatment
Aromatase inhibitors and sexual side effects
These stop the body making oestrogen from other hormones, driving levels far lower than natural menopause does. Vaginal dryness, tissue thinning, and painful sex are extremely common and often more severe than with tamoxifen. Joint pain and fatigue commonly sit alongside and shape the whole picture.
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.
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.
Burning, tearing, or aching pain with penetration. Pain is never a symptom to work around with a product — it is the one entry on this list that always deserves assessment.
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.
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
Builds over the first months of treatment and persists throughout. Courses typically run for years, so early and active management is the standard of care rather than an indulgence.
Matters more if: menopause-related dryness; sensitive or irritation-prone.
Conditions this is used for
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.
Breast cancer treatmentEndocrine therapy causes severe dryness for years, and it is treatable.
What to ask the person who prescribed it
Does my team have a menopause-after-cancer or psychosexual service I can be referred to?
What is your view on local treatment for the vaginal symptoms in my case?
Can I have a referral for pelvic-floor physiotherapy?
Things that help without touching the prescription
A regular vaginal moisturiser on a schedule plus a glycerin-free lubricant for sex — the combination, not either alone, is what most oncology guidance describes.
Skip sensation formulas and anything fragranced; both regularly sting on this tissue.
Ask about dilators and pelvic-floor physiotherapy by name — they are standard, under-offered, and effective.
Care signal
Painful sex on an aromatase inhibitor is a treatable clinical problem with a defined care pathway. It is worth raising as a treatment issue, not tolerated as an unavoidable side effect.
Frequently reported for this class. These stop the body making oestrogen from other hormones, driving levels far lower than natural menopause does. Vaginal dryness, tissue thinning, and painful sex are extremely common and often more severe than with tamoxifen. Joint pain and fatigue commonly sit alongside and shape the whole picture.
Which sexual side effects are most reported with aromatase inhibitors?
The effects reported most often are vaginal dryness or less natural lubrication, pain during penetration, lower sexual desire, and arousal is slower or harder to reach. 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 aromatase inhibitors cause a change, and does it reverse?
Builds over the first months of treatment and persists throughout. Courses typically run for years, so early and active management is the standard of care rather than an indulgence.
What should I do if I notice this while taking aromatase inhibitors?
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 aromatase inhibitors at my appointment?
A specific question gets a better answer than a general one. For this class: Does my team have a menopause-after-cancer or psychosexual service I can be referred to? What is your view on local treatment for the vaginal symptoms in my case? Can I have a referral for pelvic-floor physiotherapy?
When is this worth an appointment rather than a wait-and-see?
Painful sex on an aromatase inhibitor is a treatable clinical problem with a defined care pathway. It is worth raising as a treatment issue, not tolerated as an unavoidable side effect.
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.