Cholestyramine USP Ion-Exchange Beads from Mexico
Uniform spherical beads of cross-linked polyvinylbenzyltrimethylammonium chloride (Cholestyramine USP) designed for bile acid sequestration in cholesterol-lowering therapies. Classified under HTS 3914.00.20.00 due to its exact chemical specification as a primary-form ion-exchanger.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include particle size distribution and swelling index test data in documentation; ensure bead form doesn't trigger 'articles' classification under 3917+; watch for FDA prior notice requirements as pharmaceutical precursor