Acyclovir Bulk Mixture from Mexico
Acyclovir bulk mixture is an antiviral for herpes simplex and zoster treatments, consisting of mixed APIs and excipients for pharmaceutical formulation. Not in retail doses, it classifies under HTS 3003.90.0120 as a bulk antiviral medicament.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals: patented pharma articles — 100% floor rate
9903.05.860%Universal product exemption (U.S. note 52(b))
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Submit advance FDA notice via Prior Notice system for pharma bulk imports
• Include bioequivalence data if generic; pitfall is incomplete impurity profiles
• Use tamper-evident bulk drums to demonstrate non-retail intent