They both work in the same way. You can get branded and generic Viagra online, but they both require a prescription. As a result, you cannot buy them over the counter (OTC) — they require a ...
Viagra was approved by the FDA as a treatment for ED in 1998. It’s now sold as brand name Viagra and as generic sildenafil. It takes around 30 to 60 minutes for a normal dose of Viagra to begin ...