Viagra Side Effects

About 16% of men who took Viagra during clinical trials reported headache.

About 2 % of patients felt dizzy or had the following nervous system side effects: depression, decreased reflexes, neuropathy, shiver, sleeplessness, drowsiness, anxiety, strange dreams, loss of sensors, pain in nerves and sensation of skin’s tingling, pricking, or numbness.

The most serious side effects in this category included temporary global memory loss and seizures.