Can Your Medication Be Affecting Your Erections? What UK Men Need to Know

Our body is an amazing machine — intricate, full of metaphorical levers, buttons, pipes, nuts and bolts that work together like clockwork. Pain in a shoulder might be the consequence of a knee injury that causes us to walk with a different stance, which affects our spine and ultimately causes contraction of our shoulder muscles. This applies to muscular issues and to every other component of our body: such is the delicate and complex relationship between our parts.

So it should not come as a surprise that something as simple as a cold affects multiple body systems at once, the body turning its focus to moving us back as quickly as possible to a balanced state — which explains the often total lack of interest in sex while drinking a hot toddy with a box of tissues beside us, wrapped in a blanket.

And when a health condition is permanent and chronic, these adaptations become permanent and chronic as well.

Why Medication Doesn’t Always Behave the Way We Expect

What might feel less intuitive is the impact of medication on our body’s responses and behaviours. You take medication for the sole purpose of getting better, so it sounds like a reasonable assumption that all your body parts — penis included — will be only too happy to absorb the chemical compounds that will make everything good again. Except it does not work that way.

Medication packets come with a leaflet that we tend to throw away, because once opened we are unable to fold it neatly and it will never fit back in the box — so we either crumple it and force it in (my approach) or just throw it away. In addition to the list of active compounds and the ‘how to take and do not exceed dose’ section, these leaflets also point to the side effects of medications, and some of these can be quite substantial. Which raises the obvious question: why would we take medication that might cause side effects that could be worse than the condition we are trying to treat?

This is partly down to our need to get better as quickly as possible because of the impact on our life, family, work, and other commitments. Speed of recovery becomes your main focus, with the understanding that other consequences will be manageable. Your health, your body, your choice

Side effects are also, fundamentally, a matter of statistics. If only part of the the population is affected, it is still correct to flag the side effect and allow the patient to make a choice: will the benefit of the medication outweigh the side effect? Your health, your body, your choice.

There is also a largely Western tendency to treat symptoms rather than causes, in the hope that the cause will resolve itself once the symptoms are addressed. There is nothing incorrect in this approach — just as there is another approach that focuses on the underlying cause first, even if symptoms persist for longer as a result. Your health, your body, your choice

Why Sexual Side Effects Often Get Left Off the Leaflet

In a significant number of cases, medical researchers and regulators do not prioritise side effects that impair sexual function, because while sex is fun and a natural drive, it is — sadly — not considered critical to our survival. So a loss of libido or a penis that softens when least expected, while anxiety-inducing and relationship-affecting, are not at the top of regulators’ lists of risks in the way that blood clots or large blood pressure variations are.

There are studies that show links between certain medications and possible sexual impairment — SSRIs and SNRIs (antidepressants such as sertraline, citalopram, and fluoxetine), beta-blockers, and more. But the evidence base is patchy and almost certainly an underestimate of the real picture.

It is made even more complex by the fact that how we respond to medication comes down to individual sensitivity, circumstances, age, and overall general health. And if someone is managing multiple health conditions and taking medications for each one, the compounded effect of all those drugs might create a unique set of side effects that may not be reproducible within scientific studies — the variations are simply too great.

So, Your Penis Is Showing Unusual Behaviour. What Can You Do?

If your penis is showing little enthusiasm for sexy fun times, and you are ruling out stress, work, family, and relationship concerns, here is what you can do.

1.       Write down when your symptoms started and how they manifested. For example: loss of libido coming out of nowhere, or a change in the reliability of erections. The more specific, the more useful.

2.      Note any medication you started around that time — and by any medication, I mean ANY MEDICATION. Aspirin, cold syrup, antihistamine, all of it.

3.      Include supplements. While not ‘medication’ in the traditional sense, supplements interact with your body’s function — that is precisely why you are taking them.

4.      Read the leaflet. Is there any reference to sexual impairment, however small? Even a footnote matters.

5.      Go to your NHS pharmacist as a first port of call. They are significantly underused for this kind of question and are well-placed to review your full medication list, spot potential interactions, and advise on whether an alternative in the same drug class might carry a lower risk of sexual side effects. If the issue persists, request a GP appointment. Bring all the evidence.

6.      When you see your GP, frame the conversation carefully. If you go in simply reporting difficulty keeping an erection during sex, what you will most likely receive is medication that addresses the symptom and only the symptom. Go armed with your timeline and your medication list, and ask explicitly that your penis concerns be considered in the context of what you are taking. You are asking for an investigation, not just a fix.

7.      Do not accept a dismissive wave of the hand. Demand to get to the bottom of what is affecting your penis so you can take action and make informed choices. The British Society for Sexual Medicine is unambiguous on this: there is no longer any excuse for clinicians to avoid discussing sexual function due to embarrassment. If your GP is uncomfortable, that is their issue to manage, not yours.

You experience it? Report it

You can do one more thing to support and help your fellow men, report it.

If you believe your medication is causing a sexual side effect that is not listed on the leaflet, you can report it directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk. This is not a complaints process; it is how unlisted side effects get identified, investigated, and — when the evidence accumulates — added to the official product information. Your 5 minutes spent filling in the form can make a world of difference.

This is uncomfortable, and it might feel embarrassing. Sit with the feeling — it is normal, it is expected. And then do it anyway. Your whole body will thank you.

Sources

Clayton et al. (2002), Journal of Clinical Psychiatry. Montgomery et al. systematic review. Balon (2006), American Journal of Psychiatry (PMC3108697). Tarchi et al. (2023), Pharmacoepidemiology and Drug Safety. Corona et al. (2024), Endocrine (PMC11739250). Silvestri et al. (IIEF study). Managing Erectile Dysfunction in Hypertensive Patients, PMC8816429. Traish (2020), Fertility & Sterility. Carson (2024), Trends in Urology & Men’s Health. Cilio et al. (2025), IJIR. Ganzer et al. (2015), American Journal of Men’s Health. Hackett G et al., British Society for Sexual Medicine Guidelines on the Management of Erectile Dysfunction in Men – 2017, Journal of Sexual Medicine 2018;15(4):430–457. MHRA Yellow Card Scheme: yellowcard.mhra.gov.uk.