Pharmaceutical Grade Magnesium Oxide USP from Mexico
Light magnesium oxide meeting USP standards for use as an antacid and laxative in pharmaceuticals. Classified under HTS 2519.90.50.00 as other magnesium oxide, provided it derives from natural sources and is not a finished medicament.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide USP certificate and origin documentation proving natural mineral derivation to distinguish from synthetic chemicals
• Ensure labeling specifies 'magnesium oxide' not formulated as a tablet or capsule to stay out of Chapter 30
• Test for purity levels; USP grade must meet pharmacopeia specs but remains under 2519 if bulk powder