Neomycin and Polymyxin B Sulfates, Bacitracin, and Hydrocortisone Acetate Ophthalmic Ointment
» Neomycin and Polymyxin B Sulfates, Bacitracin, and Hydrocortisone Acetate Ophthalmic Ointment contains the equivalent of not less than 90.0 percent and not more than 140.0 percent of the labeled amounts of neomycin, polymyxin B, and bacitracin, and not less than 90.0 percent and not more than 110.0 percent of the labeled amount of hydrocortisone acetate, in a suitable ointment base.
Packaging and storage—
Preserve in collapsible ophthalmic ointment tubes.
USP Reference standards 
11
—
11—
USP Bacitracin Zinc RS
USP Hydrocortisone Acetate RS 
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USP Neomycin Sulfate RS
USP Polymyxin B Sulfate RS
Identification—
A:
It meets the requirements under Thin-Layer Chromatographic Identification Test 201BNP.
201BNP.
B:
The retention time of the major peak for hydrocortisone acetate in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the Standard preparation, as obtained in the Assay for hydrocortisone acetate.
Sterility 71—
It meets the requirements when tested as directed for Membrane Filtration under Test for Sterility of the Product to be Examined.
71—
It meets the requirements when tested as directed for Membrane Filtration under Test for Sterility of the Product to be Examined.
Minimum fill 755:
meets the requirements.
755:
meets the requirements.
Water, Method I 921:
not more than 0.5%, 20 mL of a mixture of toluene and methanol (7:3) being used in place of methanol in the titration vessel.
921:
not more than 0.5%, 20 mL of a mixture of toluene and methanol (7:3) being used in place of methanol in the titration vessel.
Metal particles—
It meets the requirements of the test for Metal Particles in Ophthalmic Ointments 751.
751.
Assay for neomycin and Assay for polymyxin B—
Proceed with Ophthalmic Ointment as directed in the Assay for neomycin and in the Assay for polymyxin B under Neomycin and Polymyxin B Sulfates and Bacitracin Zinc Ophthalmic Ointment.
Assay for bacitracin—
Proceed with Ophthalmic Ointment as directed in the Assay under Bacitracin Ointment.
Assay for hydrocortisone acetate—
Proceed with Ophthalmic Ointment as directed in the Assay under Hydrocortisone Acetate Lotion.
Auxiliary Information—
Please check for your question in the FAQs before contacting USP.
| Topic/Question | Contact | Expert Committee |
|---|---|---|
| Monograph | Ahalya Wise, M.S.
Senior Scientific Liaison 1-301-816-8161 |
(SM12010) Monographs - Small Molecules 1 |
| Reference Standards | RS Technical Services 1-301-816-8129 rstech@usp.org |
|
| 71 |
Radhakrishna S Tirumalai, Ph.D.
Principal Scientific Liaison 1-301-816-8339 |
(GCM2010) General Chapters - Microbiology |
USP35–NF30 Page 4022
Pharmacopeial Forum: Volume No. 30(2) Page 519