This chart compares 6 major erectile dysfunction (ED) drugs currently on the market: Viagra, Levitra, Cialis, Staxyn, Stendra, Caverject injections, and the MUSE suppository.
Quickly absorbed by the body; slower absorption after a high-fat meal and best taken on an empty stomach. Avoid grapefruit juice, which can make side effects worse.
Comes in 2.5, 5, 10 and 20 mg strengths. The daily dosage is 2.5 mg but can go up to 5 mg; most men start with the lower dose. For use-as-needed, or as a weekend pill, the starting dose is usually 10 mg but can be as low as 5 mg or as high as 20 mg.
May be taken with or without food, and with a moderate amount of alcohol (three drinks). Drinking more than that can increase the chances of side effects like rapid heart rate, low blood pressure, dizziness, and headaches. Grapefruit juice should be avoided