Sulfate, Neomycin, Thonzonium Bromide, and Hydrocortisone Otic Suspension

Colistin Sulfate, Neomycin, Thonzonium Bromide, and Hydrocortisone Otic Suspension 

Cortisporin-TC otic suspension with neomycin and hydrocortisone (colistin sulfate-neomycin sulfate-thonzonium bromide-hydrocortisone acetate otic suspension) is a sterile aqueous suspension containing in each milliliter colistin base activity, 3 mg (as the sulfate) neomycin base activity, 3.3 mg (as the sulfate) hydrocortisone acetate, 10 mg (1%) thonzonium bromide, 0.5 mg (0.05%)  

is added as a preservative. The suspension is a nonviscous liquid, buffered at pH 5, for instillation into the canal of the external ear or direct application to the affected aural skin. 

---