Atovaquone oral suspension, USP is a quinone antimicrobial drug. The chemical name of atovaquone is
trans
-2-[4-(4-chlorophenyl)cyclohexyl]-3-hydroxy-1,4-naphthalenedione. Atovaquone, USP is a yellow crystalline solid that is practically insoluble in water. It has a molecular weight of 366.84 and the molecular formula C
22H
19ClO
3. The compound has the following structural formula:

Atovaquone oral suspension, USP is a formulation of micro-fine particles of atovaquone, USP.
Each 5 mL of atovaquone oral suspension, USP contains 750 mg of atovaquone and the inactive ingredients benzyl alcohol, flavor natural citrus, poloxamer 188, purified water, saccharin sodium, and xanthan gum.