Viagra is a safe and effective treatment for ED. But as the saying goes, you can have too much of a good thing — and Viagra ...

A heavy meal, especially one high in fat, can slow down the absorption of the medication, making it take longer to work.

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The medications work in similar ways ... Each medication has its own dosage meter. Viagra doses are 25 milligrams (mg), 50 mg, and 100 mg. Cialis and tadalafil doses are 5 mg, 10 mg, and 20 ...