Theophylline Vet Extended-Release Tablets from Canada
Extended-release theophylline tablets, a xanthine alkaloid derivative, treat bronchial asthma in dogs with measured daily dosing. Packaged for retail veterinary sale. Classified under HTS 3004.49.00.05 as veterinary therapeutic containing alkaloids.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Dissolution profile testing required for ER formulations
• Distinguish from human versions via vet-specific strength/packaging
• Combo with antibiotics risks 3004.40 reclassification