Lamivudine from Canada
Lamivudine is a cytidine nucleoside reverse transcriptase inhibitor used in HIV and hepatitis B treatment, featuring pyrimidine heterocyclic base. This nucleic acid derivative drug is classified under HTS 2934.99.4700 for other heterocyclic drugs. Chemically defined structure meets Chapter 29 pure compound requirements.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6096.3%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
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• WHO prequalified supplier documentation; chiral purity verification (>99.5% S-enantiomer); avoid generic name confusion with chemical synonyms