Guaifenesin EP Grade Crystals from Mexico
European Pharmacopoeia compliant guaifenesin crystalline form for expectorant applications in respiratory medications. Classified under HTS 2909.49.0500 as the specific aromatic ether-alcohol guaifenesin. Pure active ingredient without formulation additives.
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 EP Certificate of Analysis confirming polymorph Form I or II specifications
• Declare as 'pure substance' to prevent reclassification as pharmaceutical preparation
• Verify DEA exemption status as non-controlled expectorant substance