If you have a severe headache or a headache that won’t go away, call your doctor. They’ll help determine the best treatment for your headache. If you have other questions about how long Viagra works, talk with your doctor.

Viagra - Patient leaflet, side effects, dosage

To keep up with the latest from VIAGRA® (sildenafil citrate), enter your information below. Patients should always ask their doctors for medical advice about adverse events. No, Viagra will not cure ED, but it will help manage its symptoms. Viagra helps to decrease symptoms of ED by helping you to get and keep an erection.
Talk to your doctor if you think you might use any recreational drugs with sildenafil. But drinking lots of alcohol can make it more difficult to get an erection. To get the most benefit from sildenafil if you're taking it for erection problems, do not drink much alcohol before taking it. Sildenafil does not affect any type of contraception, including the combined pill or BUY XANAX WITHOUT PRESCRITION emergency contraception. There's no good evidence that sildenafil works for women with sexual problems. If you have questions about the safety of using Viagra while breastfeeding, talk with your doctor.
ED medication such as Viagra is safe for people with healthy hearts. ED treatments can be used from six months after a heart attack but aren't recommended for people with low blood pressure. Viagra for men, often referred to as the 'blue pill', is an ED pill which can help to improve sexual wellbeing by enhancing erectile performance.

You can find out about the side effects of recreational drugs on the Frank website. Sildenafil has not been properly tested with recreational drugs. You can eat and drink normally while taking sildenafil to get an erection.
Tell your healthcare provider about all medicines that you take or have recently taken. You may be at higher risk for this if you take a blood thinner medicine. Tell your healthcare provider if you get nosebleeds often while taking sildenafil. If your nosebleed is severe or will not stop after applying pressure, get help right away. If you get any side effects, talk to you doctor or pharmacist or nurse.

How do I know if I'm eligible for a prescription for Viagra?

Before you start Viagra or any other medications, tell your doctor about any other drugs you take. Your doctor can tell you if there are any interactions that may happen. But be sure to talk with your doctor before starting this drug. They may recommend a higher dose of Viagra or a different medication.
It contains the same active ingredient as Viagra, and like the ‘little blue pill’, works by increasing blood flow to your penis. Sildenafil usually starts to work around 30 minutes after you’ve taken it, and can help make your erections stronger for up to five hours. Sildenafil may cause a mild and temporary drop in blood pressure. You may be at a higher risk if you have certain health conditions or take blood pressure medicines. Tell your healthcare provider right away if you have any of the following symptoms of low blood pressure.