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Viagra is taken orally (swallowed by mouth).
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Don’t take Viagra more than once a day.
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Don’t take Viagra within 24 hours of taking another ED drug.
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Don’t take Viagra if you take any other medication that contains nitrates.
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Take Viagra about 30-60 minutes before sexual activity to allow the medication to take effect. You can stick with what gives you the best results.
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Swallow the tablet with a glass of water.
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Having a meal before taking Viagra or not only affects the time the pill takes to start working. Usually taking a high fat meal before taking Viagra would delay the drug’s effects.
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Don’t take a higher dosage than that specified in your prescription. Usually doctors advice their patients to increase the dosage if the lower ones are not working as effective as they should be.
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If an erection lasts for more than 4 hours, seek medical help from your doctor or health care provider.
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Follow your doctor’s directions on your prescription label, as he/she knows more about your specific health condition.