Sulfamethoxazole USP from Canada
Sulfamethoxazole is a synthetic bacteriostatic sulfonamide antibiotic used primarily in combination with trimethoprim for treating urinary tract infections and respiratory infections. It falls under HTS 2935.90.95.00 as a sulfonamide derivative other than those specifically named in prior subheadings, classified as a separate chemically defined organic compound per Chapter 29 note (a).
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide Certificate of Analysis (COA) confirming USP grade and purity >99% to avoid reclassification or detention
• FDA registration required; ensure Drug Master File (DMF) is active for API imports