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
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 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