Viagra is a prescription medication used specifically for treating erectile dysfunction (ED) by facilitating increased blood flow to the penis. This helps men achieve and sustain an erection upon sexual stimulation. It is important to note that while Viagra assists with ED, it does not cure the underlying condition nor does it enhance sexual desire. Furthermore, it does not protect against sexually transmitted infections (STIs) or prevent pregnancy.
Access to Viagra requires a prescription from a qualified health care provider, and it is not available over the counter. The active ingredient, sildenafil, is also marketed as a generic medication.