Diphenhydramine Hydrochloride API from China
Diphenhydramine HCl, first-generation antihistamine with piperazine-like nitrogen heterocycle, falls under HTS 2933.99.90.00 as a drug. Widely imported for Benadryl production and motion sickness treatments.
Duty Rate — China → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Ensure USP <467> microbial limits testing certification
• Monitor for residual solvents per ICH Q3C
• Label with 'may impair driving' warnings per FDA