Zanamivir Bulk Active Substance from Canada
Zanamivir is a neuraminidase inhibitor antiviral in bulk form for manufacturing influenza treatments like Relenza inhalers. This mixed constituent product for therapeutic use is not retail-packed, fitting HTS 3003.90.0120 for antivirals.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.60100%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
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Comply with FDA import alerts for antivirals; provide GMP certification from manufacturer
• Ensure cold chain documentation if required for stability; avoid temperature excursion pitfalls
• Label as 'for further manufacturing' to prevent retail misclassification