: Sildenafil is the active ingredient in Viagra and is available as a generic medication . Generic sildenafil is medically equivalent to Pfizer's brand-name Viagra but is usually significantly more affordable . Safety and Side Effects
: Viagra helps men with erectile dysfunction (ED) achieve and maintain an erection by increasing blood flow to the penis when sexually stimulated .
If you're looking to purchase online, it's essential to ensure you're getting the authentic medication manufactured by Pfizer . Buying prescription drugs online requires caution to avoid counterfeit products and ensure patient safety. How to Safely Buy Viagra Online