Vitamin A Capsules
» Vitamin A Capsules contain not less than 95.0 percent and not more than 120.0 percent of the labeled amount of vitamin A.
Packaging and storage— Preserve in tight, light-resistant containers.
Labeling— Label the Capsules to indicate the form in which the vitamin is present, and to indicate the vitamin A activity in terms of the equivalent amount of retinol in mg. The vitamin A activity may be stated also in USP Units per Capsule, on the basis that 1 USP Vitamin A Unit equals the biological activity of 0.3 µg of the all-trans isomer of retinol.
Disintegration 701: 45 minutes, determined using 0.05 M acetate buffer, prepared by mixing 2.99 g of sodium acetate and 1.66 mL of glacial acetic acid with water to obtain 1000 mL of solution having a pH of 4.5 ± 0.05, maintained at 37 ± 2 as the immersion fluid.
Uniformity of dosage units 905: meet the requirements.
Other requirements— The contents of Capsules respond to the tests for Identification for vitamin A and meet the requirements of the test for Absorbance ratio under Vitamin A.
Assay— Using not less than 5 Capsules, proceed as directed under Vitamin A Assay 571. Calculate the content of retinol (C20H30O) in mg and in USP Vitamin A Units per Capsule.
Auxiliary Information— Please check for your question in the FAQs before contacting USP.
Topic/Question Contact Expert Committee
Monograph Curtis Phinney

(DSN05) Dietary Supplements - Non-Botanicals
Reference Standards Lili Wang, Technical Services Scientist
701 Margareth R.C. Marques, Ph.D.
Senior Scientist
(BPC05) Biopharmaceutics05
USP32–NF27 Page 3865