Several medications are effective. The best option depends on how quickly you want it to work, how long you want the effects to last, and your personal health profile.

Possible side effects include headache, flushing, nasal congestion, indigestion, and dizziness. These are usually mild and short-lived.

Most men find ED medication helps them achieve and maintain a firm erection long enough for satisfying sex. Results vary depending on the medication, dose, and your overall health. Some notice improvement after the first dose, while others may need a few tries to find the right timing and dosage. The medicine won’t increase sexual desire, and it only works when you’re sexually aroused.