U.S. PHARMACOPEIA

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Calamine Lotion
(Current title—not to change until July 1, 2007)
Monograph title change—to become official July 1, 2007
See Calamine Topical Suspension
» Prepare Calamine Lotion as follows.
Calamine 80 g
Zinc Oxide 80 g
Glycerin 20 mL
Bentonite Magma 250 mL
Calcium Hydroxide Topical Solution,
a sufficient quantity to make		 1000 mL
Dilute the Bentonite Magma with an equal volume of Calcium Hydroxide Topical Solution. Mix the powders intimately with the Glycerin and about 100 mL of the diluted magma, triturating until a smooth, uniform paste is formed. Gradually incorporate the remainder of the diluted magma. Finally add enough Calcium Hydroxide Topical Solution to make 1000 mL, and shake.
If a more viscous consistency in the Lotion is desired, the quantity of Bentonite Magma may be increased to not more than 400 mL.
NOTE—Shake Calamine Lotion before dispensing.
Packaging and storage— Preserve in tight containers.
Microbial limits 61— It meets the requirements of the tests for absence of Staphylococcus aureus and Pseudomonas aeruginosa.
Residual solvents 467: meets the requirements.
(Official January 1, 2007)
Auxiliary Information— Staff Liaison : Feiwen Mao, M.S., Senior Scientific Associate
Expert Committee : (MDOOD05) Monograph Development-Ophthalmics Oncologics and Dermatologicals
USP29–NF24 Page 341
Pharmacopeial Forum : Volume No. 30(2) Page 467
Phone Number : 1-301-816-8320