ORBIVAN™ Butalbital, Acetaminophen and Caffeine Capsules, USP are supplied in hard-gelatin capsule form for oral administration.

Each capsule contains the following active ingredients:

Butalbital, USP 50 mg
Acetaminophen, USP 300 mg
Caffeine, USP 40 mg

Inactive Ingredients: sodium lauryl sulfate, talc, microcrystalline cellulose, stearic acid, D&C yellow #10, FD&C red#40, titanium dioxide, FD&C blue #1, FD&C yellow #6, gelatin.

Butalbital (5-allyl-5-isobutylbarbituric acid), is a short to intermediate-acting barbiturate of molecular weight 212.25. It has the following structural formula:

Butalbital structural formula illustration

Acetaminophen (4'-hydroxyacetanilide), is a non-opiate, non-salicylate analgesic and antipyretic of molecular weight 151.16. It has the following structural formula:

Acetaminophen structural formula illustration

Caffeine (1,3,7-trimethylxanthine), is a central nervous system stimulant of molecular weight 194.19. It has the following structural formula:

Caffeine structural formula illustration

Related Drugs Index: