Each tablet also contains the following excipients: Microcrystalline cellulose, mannitol, croscarmellose sodium, hydrogenated vegetable oil, hypromellose, polysorbate 80, glycerol 85%, sucrose, magnesium stearate, yellow iron oxide, red iron oxide and titanium dioxide.
Entacapone is (E)-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)-N,N-diethyl-2-propenamide.