Medically reviewed by Matthew Wosnitzer, MD Key Takeaways Viagra lasts for about four hours, but it can last longer in some ...

Viagra (Sildenafil): Uses, Benefits and Side Effects Whether you’re a senior in high school or a senior-living resident, you’ve likely heard of Viagra (sildenafil) — the original medication for ED.

Viagra (Sildenafil): Uses, Benefits and Side Effects Whether you’re a senior in high school or a senior-living resident, you’ve likely heard of Viagra (sildenafil) — the original medication for ED.

Recent studies on the effects of sildenafil (Viagra) on Alzheimer’s risk show it may offer some prevention — and potentially a treatment — for the disease. But more research is needed. Researchers are ...