How long does it take for Viagra to work?

The active ingredient in Viagra, sildenafil citrate, will generally help you to get an erection hard enough for sex any time between 30 minutes and hour after taking it. Men are advised to take the medicine around an hour before they plan to have sex. Remember though, Viagra will only work if you’re sexually stimulated. It won’t work if you’re not aroused.

Try to feel as relaxed as possible in a comfortable environment when you take Viagra. Not doing so, or taking Viagra whilst feeling nervous or rushed can have a negative psychological effect, which may make it harder to get an erection.


Is there any way I can make Viagra work quicker?

There’s nothing you can do to make Viagra’s effects work quicker, so don’t ‘double dose’ or take more than one tablet per day. It can sometimes take Viagra longer to work if you have it after a heavy and fatty meal, so you could try to take a tablet on an empty stomach with a glass of water. If you’re worried about when to take Viagra because the effects might not kick in quickly enough, you should take it an hour before sex to give the treatment sufficient time to enter the body. 


Is there anything that makes Viagra work slower?

Eating a high-fat meal before you take Viagra can result in the effects taking longer to kick in. This is because the drug has to be absorbed into your bloodstream for it to become effective, something which won’t happen quickly if your stomach is busy digesting a meal. 

Another thing that can make Viagra work slower, or even not at all, is alcohol. Alcohol decreases the amount of blood that stays in your penis, so the more you drink, the harder you’ll find it to get an erection. Drinking a small amount of alcohol such as one glass of beer isn’t likely to prevent Viagra from working, but you shouldn’t drink heavily if you want the tablet to have optimal effect.

It’s also important to know that drinking grapefruit juice or eating grapefruit can have an effect on how the medicine works, so avoid both when taking Viagra.


How long will Viagra’s effect last?

Viagra’s effects will usually last between an hour and four hours, meaning you’ll find it easier to get an erection hard enough for sex during this period. It doesn’t mean you’ll have an erection for this length of time. If you have an erection that lasts longer than four hours (priapism) you should call 111 immediately, as this can cause permanent damage to your penis if left untreated. 


How much Viagra can I take?

You should only take one Viagra tablet once in a 24-hour period, regardless of whether this is a 25mg, 50mg or 100mg tablet. Taking too much sildenafil can cause unpleasant side-effects, such as headaches, dizziness, indigestion, blocked nose or blurred vision. 

Having low blood pressure from overdosing on Viagra could cause symptoms such as heart palpitations or even fainting, so it’s very important you don’t take more Viagra than you’re supposed to. If you think you’ve taken too much Viagra by accident, you should call 111 or speak to your doctor. 


Are there other ED drugs I can take which work quicker than Viagra?

There are some ED treatments available which may help you get an erection hard enough for sex quicker than Viagra. You can access these via a prescription from your GP or through online clinics such as the Boots Erectile Dysfunction Online Clinic (subject to availability and clinician approval, charges apply). Spedra, for example, is one of the fastest-acting ED treatments available, and can help users get an erection within 15 minutes of taking the tablet. 


How does the Boots Erectile Dysfunction Online Clinic work?

If you choose to access Viagra or any other prescription ED treatment through the Boots Erectile Dysfunction Online Clinic, you’ll have to complete an online consultation before you’re prescribed them. You’ll be asked about your health, any medications you may be taking and your lifestyle choices. After you’ve completed the consultation, our clinicians will review your answers and let you know whether or not the ED treatment is suitable for you. 

If our ED treatments are suitable for you, you’ll be able to pick up your medicine in store or have it delivered to an address of your choice free of charge. Treatment is also subject to stock availability. 

† Erectile dysfunction medicine without a prescription. Subject to stock availability & pharmacist approval. Contains sildenafil. Always read the label ​​​​​​​