Acyclovir from Mexico
Acyclovir is a guanosine nucleoside analog with a purine heterocyclic base, used as antiviral drug against herpes viruses. This acyclic nucleic acid derivative qualifies under HTS 2934.99.4700 as a pharmaceutical drug heterocyclic compound. Its specific antiviral therapeutic use defines classification.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• GMP certification mandatory for API; stability studies for 12-month shelf life; differentiate from veterinary formulations under 2934.99.90