Insulin Zinc Crystals (Lente Insulin) from United States
Insulin zinc crystals are amorphous and crystalline zinc-insulin complexes providing intermediate duration of action. As an insulin derivative, the zinc modification does not trigger classification as an organo-inorganic compound, so it falls under tariff item 2937.12.00.
Duty Rate — United States → Canada
0%
Import Tips
• Document that the zinc is part of the insulin complex and not a separate organo-inorganic compound
• Provide purity and composition data to support classification
• Verify that the product is not considered a finished pharmaceutical product