SPL Set ID: ff263c9a-3db2-45ac-9ba6-8fca47199604

Droxidopa capsules contain droxidopa, which is a synthetic amino acid precursor of norepinephrine, for oral administration. Chemically, droxidopa is (–)-threo-3-(3,4-Dihydroxyphenyl)-L-serine. It has the following structural formula: Droxidopa is white to off-white powder. It is slightly soluble in water and practically insoluble in ethanol. It has a molecular weight of 213.19 and a molecular formula of C 9 H 11 NO 5 . Droxidopa capsules also contain the following inactive ingredients: corn starch, magnesium stearate and mannitol. The capsule shell is printed with black ink. The black ink contains black iron oxide, potassium hydroxide and shellac. The capsule shell contains the following inactive ingredients: 100 mg-FD&C Blue 1, gelatin, iron oxide black, iron oxide red and titanium dioxide; 200 mg-FD&C Blue 1, gelatin, iron oxide black, iron oxide red, iron oxide yellow and titanium dioxide; 300 mg – D&C Yellow 10, FD&C Blue 1, gelatin, iron oxide black, iron oxide red and titanium dioxide. Droxidopa capsules differ in size and color by strength [see Dosage Forms and Strengths (3) ]. Chemical structer