It's one of the most common questions men ask about Viagra: can you have a drink with it? The short answer on Viagra and alcohol is that a drink or two is unlikely to cause problems for most men. But heavy drinking can make it harder to get an erection and make side effects like dizziness more likely.
This guide explains what actually happens when you mix the two, how much is sensible, and how alcohol affects your erections in the long run.
Moderation is the key. A small drink won't usually get in the way, but the more you drink, the more alcohol works against what Viagra is trying to do.
Can you drink alcohol with Viagra?
Yes, in moderation. Viagra contains sildenafil, and studies haven't found a dangerous interaction between sildenafil and alcohol in healthy men.
In one study, healthy volunteers drank enough alcohol to reach an average blood alcohol level of 80mg per 100ml. That's the legal drink-drive limit in England and Wales. Taking sildenafil on top didn't increase alcohol's effect on blood pressure.1
That doesn't mean drinking freely is a good idea. The Viagra leaflet itself warns that alcohol can temporarily make it harder to get an erection, and advises against drinking a lot before you take it.2
How does alcohol affect Viagra?
You may have read that alcohol breaks Viagra down faster. There's no good evidence for that. The real issue is that alcohol works against the way erections happen.
Viagra doesn't cause an erection on its own. It relaxes the blood vessels in your penis so more blood can flow in, but only when you're sexually aroused.1
Alcohol is a depressant. In larger amounts, it dulls the signals between your brain, nerves and penis that kick off arousal in the first place. So the tablet can be doing its job while the alcohol makes it harder for anything to get started.
The big meal effect
Nights out often mean a big meal as well as drinks. Taking Viagra after a heavy, high-fat meal can delay how quickly it starts to work.1 If you're planning ahead, a lighter meal gives the tablet a better chance.
If Viagra didn't seem to work after a big night, it may have been the drinks and dinner rather than the tablet. Try again on a quieter evening.
Can alcohol make Viagra side effects worse?
It can. Viagra and alcohol both widen blood vessels, so together they can make some side effects more noticeable.
Viagra's product information lists its most common side effects.1 They include:
- Headache - very common, affecting more than 1 in 10 men
- Flushing - common
- Dizziness - common
- Indigestion and feeling sick - common
- Blocked nose - common
- Changes to vision, such as a colour tinge or blurred vision - common
Drinking a lot can add to headaches, flushing and dizziness. Getting up quickly after a few drinks can also make you feel light-headed or faint.
Do not take Viagra with poppers or any nitrate medicine. The combination can cause a dangerous drop in blood pressure.
Get medical help straightaway if you have chest pain during or after sex, sudden loss of vision, or an erection that lasts longer than 4 hours.1
Does alcohol cause erectile dysfunction?
Drinking too much is a well-known cause of erection problems, both in the moment and over time.3
In the short term, heavy drinking dampens arousal and can make it hard to get or keep an erection. Plenty of men have been there.
Over the long term, regularly drinking too much can affect your hormones, nerves and blood vessels. One study of men with alcohol dependence found that 72% had at least one type of sexual problem, including erectile dysfunction, low sex drive and premature ejaculation.4
Cutting back on alcohol can improve erections in its own right, and it may mean you rely less on tablets over time.
How much alcohol is OK with Viagra?
There's no exact safe amount when it comes to Viagra. Keeping to UK low-risk drinking guidelines is a sensible place to start: no more than 14 units a week, spread over 3 or more days.5
For reference, a pint of average-strength lager is around 2 to 3 units, and a medium glass of wine is about 2 units.5
A few tips if you're planning a drink:
- Keep it to one or two drinks
- Alternate alcoholic drinks with water
- Avoid a heavy meal just before taking your tablet
- Take Viagra about an hour before sex, as directed
Getting to the root cause
Viagra treats the symptoms of erectile dysfunction, but it doesn't fix what's behind them. Lifestyle changes can make a big difference.3
- Cut down on alcohol
- Stop smoking
- Lose weight if you're overweight
- Get regular exercise
Erection problems can sometimes be an early sign of conditions like heart disease, high blood pressure or diabetes.3
If erection problems are new or getting worse, book a check-up with a GP. It's a chance to rule out other health conditions.
Frequently asked questions
Can Viagra and alcohol kill you?
For most healthy men, a moderate amount of alcohol with Viagra isn’t dangerous, and studies haven’t shown a serious interaction between the two. The real danger comes from combining Viagra with nitrates or poppers, which can cause a severe drop in blood pressure. Heavy drinking can also make dizziness and fainting more likely, so keep it moderate.
Can you drink alcohol with Cialis?
Yes, in moderation. Cialis contains tadalafil, which works in a similar way to Viagra, so the same advice applies. A drink or two is unlikely to cause problems, but heavy drinking can make it harder to get an erection and increase side effects such as dizziness and headaches. Cialis lasts longer in the body, so keep drinking moderate across that window.
Can you drink alcohol with Viagra Connect?
Yes. Viagra Connect contains 50mg of sildenafil, the same active ingredient as Viagra, so the advice is the same. Moderate drinking is unlikely to cause problems, but drinking a lot can make it harder to get an erection and make side effects like flushing and dizziness more noticeable.
How long after taking Viagra can I drink alcohol?
There’s no set waiting time, and a drink or two around the time you take Viagra is unlikely to cause problems for most men. What matters more is how much you drink. Sildenafil usually works for around 4 hours, so keep your drinking moderate across that window if you want the best results.
Can you take Viagra after a big meal?
You can, but it may take longer to work. A heavy, high-fat meal slows down how quickly sildenafil is absorbed, so the effects may be delayed. If you’re planning dinner and drinks, choosing a lighter meal can help the tablet work more quickly.
References
- Viatris. Viagra 50 mg film-coated tablets: Summary of Product Characteristics. Electronic Medicines Compendium; 2025. medicines.org.uk/emc
- Viatris. Viagra 25 mg, 50 mg, 100 mg film-coated tablets: Patient Information Leaflet. Electronic Medicines Compendium; 2025. medicines.org.uk/emc
- NHS. Erectile dysfunction (impotence). NHS website; 2026. nhs.uk
- Arackal BS, Benegal V. Prevalence of sexual dysfunction in male subjects with alcohol dependence. Indian Journal of Psychiatry. 2007;49(2):109-112. doi:10.4103/0019-5545.33257
- NHS. Alcohol units. NHS website; 2023. nhs.uk
This article is intended for informational purposes only and does not replace professional medical advice. Always read the patient information leaflet supplied with your medication and speak to a healthcare professional if you have specific concerns.