Viagra is the name that Slidenafil is sold under.
The scientific name for Viagra is sildenafil citrate.
Big pharmaceutical stores always sell Viagra in wholesale. Street corner pharmacies sell them in retail.
Only the name - Viagra is the brand name of sildenafil.
The active ingredient in Viagra is sildenafil citrate. "Viagra" is the trade name used by Pfizer.
Viagra is the brand name for sildenafil citrate. There is no "super viagra", but there can be other delivery methods for sildenafil citrate - like oral jelly - from other manufacturers.
Generic Viagra and Real Viagara have the same ingredients, same effects, both reliable and safe and both fight impotence. The only difference is the brand name. Generic Viagra is much cheaper than brand Viagra.
Viagra
The patent for Viagra in in the United States is owned by the company Pfizer. Pfizer is a pharmaceutical business that has continuously and exclusively maintained the patent for the Viagra brand name and the drug Sildenafil.
Viagra is a prescription-only medication. Not only is buying Viagra on the street illegal, but most of the time it's not even Viagra. Con-artists produce their own pills using maybe 2% crushed Viagra with dust, flour, talcum powder, rat poison and asbestos mixed with food colouring. You're most likely causing harm to your manhood buying Viagra illegally rather than legally over the counter.
It is another name for Cialis, a prescription drug close to Viagra only that it lasts for 36 hours and not 4 like Viagra does. hence the name "weekend"
Sildenafilis (or sildenafil citrate) is the drug name, if that's what you're after.