Beta Blockers and Erectile Dysfunction: Which Ones Cause Problems and What You Can Do

Beta blockers can cause erectile dysfunction, and this is a recognised side effect rather than a coincidence. The risk is real but varies considerably depending on which beta blocker you take. If you're on bisoprolol, the most commonly prescribed beta blocker in UK primary care, you have the highest measured risk among the major options. The good news is that alternatives exist and the situation is usually fixable.

Why beta blockers affect erections#

An erection depends on blood flowing into the penis, which requires the blood vessels there to relax and widen. This process is driven largely by nitric oxide, a chemical your body releases from the lining of blood vessels during sexual arousal.

Beta blockers interfere with this in two main ways. First, they reduce cardiac output and peripheral blood flow, meaning less blood reaches the pelvic region. Second, some beta blockers (particularly the older, non-selective types) reduce nitric oxide production directly, making it harder for those blood vessels to open up.

There is also a psychological dimension worth understanding. Once a man knows that a drug might cause sexual problems, he is measurably more likely to experience them, a phenomenon called the nocebo effect. This matters in beta blocker studies: awareness of the side effect increases its likelihood. This does not mean the physical effect is not real, but it does mean that some of what gets attributed to the drug may be partly expectation-driven.

Which beta blocker carries the most risk#

A 2022 systematic review and meta-analysis compared five commonly used beta blockers directly. The results, expressed as relative risk (RR), give a clear ranking:

Bisoprolol's higher risk is clinically important because it is the drug most UK men on beta blockers will actually be taking. The gap between bisoprolol (RR 1.37) and nebivolol (RR 0.87) is meaningful: switching between them could significantly reduce drug-related ED without abandoning beta blocker therapy.

Nebivolol is different from the others because it releases nitric oxide from blood vessel walls, actively supporting the same mechanism that erections depend on. The MR NOED study (Brixius et al., 2007) confirmed this advantage directly, finding that men switched from other beta blockers to nebivolol reported significant improvements in erectile function.

Is the ED from the drug or the condition?#

This is worth thinking through carefully, because the answer affects your options.

Cardiovascular disease itself causes ED independently of any medication. Hypertension damages blood vessel linings. Heart failure reduces cardiac output. Diabetes, which often accompanies these conditions, affects both nerves and blood flow. Anxiety about your health, reduced physical fitness, and relationship stress can all contribute too.

If ED started or worsened shortly after beginning or increasing a beta blocker dose, the drug is the more likely culprit. If it predated the prescription or remained unchanged after starting the drug, the underlying condition or other factors may be the primary driver. Many men have more than one cause operating at the same time.

Also worth noting: thiazide diuretics such as bendroflumethiazide are frequently co-prescribed alongside beta blockers for hypertension. They independently worsen ED. If you take both, you may be attributing everything to the beta blocker when the combination is the problem.

Talking to your GP about switching#

You can and should raise this with your GP. A useful approach is to be direct: explain that you believe your medication may be affecting your sexual function and ask whether nebivolol would be suitable for your condition.

NICE guidance on hypertension (NG136) does not position beta blockers as first-line for most patients, so there may also be scope to discuss switching to an alternative antihypertensive class such as an ACE inhibitor or calcium channel blocker, depending on why you were prescribed a beta blocker in the first place. For heart failure, NICE guidance (NG106) does recommend beta blockers as first-line, so switching away from the class entirely is usually not appropriate in that setting, but switching to nebivolol within the class often is.

Nebivolol is available on NHS prescription and is on the NHS formulary. However, it is important to be aware that nebivolol's UK licensed indication for hypertension applies specifically to adults aged 70 and over. For younger patients with hypertension, prescribing nebivolol would be off-label, and your GP will need to exercise their clinical judgement accordingly. For heart failure, the licensed indication is broader. You should discuss your specific circumstances with your GP before assuming a switch is straightforward.

If you suspect a medication is causing sexual side effects, you can also report it through the MHRA's Yellow Card scheme at yellowcard.mhra.gov.uk. This contributes to ongoing safety monitoring and is worth doing.

Will ED resolve after switching?#

For drug-related ED, improvements are often seen within 4 to 8 weeks of switching to nebivolol, based on the clinical studies. The Doumas et al. trial found significant recovery in erectile function scores in hypertensive men who switched from other beta blockers to nebivolol. Recovery is not guaranteed and depends on how much of the ED is drug-driven versus condition-driven, but the evidence is encouraging.

Taking sildenafil or tadalafil alongside a beta blocker#

PDE5 inhibitors (sildenafil, tadalafil) may be considered alongside beta blockers in some men, but the safety profile varies considerably by individual circumstance and should not be assumed. Both drug classes lower blood pressure, and the additive effect can be clinically significant, particularly in men with heart failure or those already taking multiple antihypertensives where blood pressure may already be low. Sildenafil is contraindicated in severe heart failure (NYHA class IV), and NICE NG106 and the BNF highlight the need for caution in cardiac populations more broadly.

The key contraindication for sildenafil and tadalafil is concurrent use with nitrates (such as GTN spray), not beta blockers per se, but a full medication review is essential before starting either PDE5 inhibitor in any man on cardiac medications.

Viagra Connect (sildenafil 50mg) is available from UK pharmacies without a prescription for men who pass a pharmacist's suitability check. However, men in the cardiac population — including those with heart failure, post-MI status, or those taking multiple antihypertensives — may have absolute or relative contraindications to PDE5 inhibitors that go beyond what a standard pharmacy suitability check is designed to capture. A proper clinical assessment is more appropriate for this group. Totiva's ED service allows you to complete a free online consultation where a UK clinician reviews your health history and current medications before recommending anything.

For men on bisoprolol who are experiencing ED, the most practical first step is a GP conversation about switching to nebivolol. If medication-related ED persists after any switch, or if other causes are contributing, a PDE5 inhibitor may be an option, but only following appropriate clinical review given your full cardiac history.