Knowledge Center
Patent / Nov 08, 2014
Preparation of a tetracycline topical formulations
Source:
US 20140147504
The invention relates to a topical suspension formulation that includes a tetracycline, a liq. medium and a polymeric gelling agent. 聽The tetracycline may be in the form of its salts, hydrates, or polymorphs and is in a suspended form within the formulation. 聽The liq. medium is selected such that it does not completely dissolve or minimally dissolves the tetracycline. 聽The gelling agent is a polymeric hydrocarbon gelling agent. 聽Preferably, the tetracycline has a particle size of 鈮20 渭. 聽A formulation contained minocycline free base (cryst.) 1, mineral oil 30, and Versagel-鈥婱750 69鈥%.
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