White, round, biconvex film-coated tablets marked "VLE" on one side and "RVT 20" on the other.
Each film-coated tablet contains 20 mg of sildenafil (as citrate). Revatio tablets also contain lactose.
Excipients/Inactive Ingredients: Tablet core: Microcrystalline cellulose, Calcium hydrogen phosphate (anhydrous), Croscarmellose sodium, Magnesium stearate.
Film coat: Hypromellose, Titanium dioxide (E171), Lactose monohydrate, Glycerol triacetate.