okay..........wierd question first of all stimulates blood pressure mainly in the penis so they can get a erection "hard on" or "boner"
Viagra - launched in America in February of 1998.
Viagra, containing the active ingredient sildenafil, is primarily used to treat erectile dysfunction (ED) in men. It works by increasing blood flow to the penis, helping to achieve and maintain an erection when sexually stimulated. Additionally, Viagra may be prescribed for pulmonary arterial hypertension to improve exercise capacity. Always consult a healthcare professional for proper use and potential side effects.