</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Promethazine Hydrochloride from Mexico

Promethazine hydrochloride is a phenothiazine derivative used primarily as an antihistamine, antiemetic, and sedative drug. It contains a phenothiazine ring-system and falls under HTS 2934.30.27.00 as a chemically defined other drug of this class, distinct from antipsychotics like those in 2934.30.22.

Duty Rate — Mexico → United States

16.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Verify FDA drug registration and provide Certificate of Analysis confirming chemical purity as per Chapter 29 notes for chemically defined compounds

Include detailed pharmacological documentation to distinguish from antipsychotic phenothiazines under 2934.30.22

Avoid misclassification as finished dosage forms which fall under Chapter 30