Viagra is a branded version of sildenafil. The appearance of Sildenafil tablets may vary, but Viagra tablets are always:
Blue
Shaped like a diamond with rounded edges
Have ‘Pfizer’ imprinted on one side
Marked with ‘V’ followed by a number to indicate the dose on the other side. i.e. ‘V50’
Buying Viagra from a registered online pharmacy, such as Medzino, is a good way to ensure that your medication is genuine.