Sulfamethoxazole USP from Mexico
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 — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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