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
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Ensure USP <467> microbial limits testing certification
• Monitor for residual solvents per ICH Q3C
• Label with 'may impair driving' warnings per FDA