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Viagra takes around 30 minutes to become effective and lasts about 4 hours. Cialis lasts much longer – up to 36 hours in some cases. Stendra can start doing its thing in as little as 15 minutes On average, Viagra lasts between 2 and 3 hours before its effects start to diminish. Viagra can last up to 5 hours or longer depending on your dosage, your body s metabolism, and other external High-fat meals: Taking Viagra with a high-fat meal not only increases the time it takes for the drug to work but also decreases the concentration of Viagra in the bloodstream by 29%. Alcohol : As a depressant, alcohol slows blood circulation and the distribution of the drug throughout the body. viagra prices lloyds pharmacy pharmregtop Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud’s phenomenon. Cialis Viagra; Main ingredient: tadalafil: sildenafil: How long it takes to work: around 30 minutes: around 30 minutes: How long it lasts: 17.5 36 hours: 4 12 hours: When to take it To learn more about some alternatives of Viagra, view the following articles: Viagra vs. Cialis; Viagra vs. Levitra; Viagra vs. sildenafil; If you would like additional information about alternatives to Viagra, ask your doctor.
Viagra dosage for erectile dysfunction (ED) is usually milligrams (mg), but those over 65 may start at 25 mg. Your doctor will also need to consider possible drug interactions.
Viagra has a number of common side effects, including: Headache. Flushing. Upset stomach. Runny nose. Back pain. Muscle pain. Nausea. Dizziness. Rash. If you experience side effects like these after taking Viagra, talk to your HCP. Side effects such as headaches and flushing are relatively common, but you should still let them know if they re 4.1 Nitrates. Consistent with its known effects on the nitric oxide/cGMP pathway [see Clinical Pharmacology (12.1, 12.2)], VIAGRA was shown to potentiate the hypotensive effects of nitrates, and its administration to patients who are using nitric oxide donors such as organic nitrates or organic nitrites in any form either regularly and/or intermittently is therefore contraindicated. generic super viagra side effects Viagra side effects. Get emergency medical help if you have signs of an allergic reaction to Viagra: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop taking Viagra and get emergency medical help if you have: heart attack symptoms-chest pain or pressure, pain See more Does sildenafil have side effects? The most common side effects of sildenafil include: headache; indigestion or heartburn; back pain; muscle aches; flushed skin; stuffy or runny nose; These side effects usually go away after a few hours. Very occasionally, sildenafil can cause a painful erection or an erection that won t go away (priapism).