What is vgr 100?

Pill with imprint Pfizer VGR 100 is Blue, Four-sided and has been identified as Viagra 100 mg. Pill Imprint Pfizer VGR 100 (Viagra 100 mg). Each blue, round, diamond-shaped tablet, marked "PFIZER" on one side and " VGR 100" on the other side, contains sildenafil citrate equivalent to 100 mg of. color: blue; shape: diamond; imprint: VGR 100, Pfizer. Never take more than 100 mg of Viagra in a 24-hour period. VIAGRA is available by prescription only in 25 mg, 50 mg, and 100 mg tablets.