Drospirenone from Canada
Drospirenone is a synthetic spironolactone analogue with progestogenic and antimineralocorticoid activity, used in oral contraceptives. Classified in HTS 2937.23.5050 as a steroidal progestin derivative used primarily as a hormone. Its unique structure still qualifies under Chapter 29 hormone provisions.
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
• Specify Form I vs Form II crystals; affects bioavailability and tariff docs
• Test for aldosterone antagonism potency to confirm hormonal function
• Maintain 2-8°C throughout supply chain to preserve polymorphic stability