Viagra Generic API (Sildenafil Base) from Mexico
Pharmaceutical-grade sildenafil base (non-citrate form) for generic erectile dysfunction medications contains unfused pyrazole ring structure under HTS 2933.19.3500. Bulk imported for salt formation and tablet compression.
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
• Differentiate free base from citrate salt with NMR spectra in documentation
• Include particle size distribution for bioavailability equivalence
• Avoid 2925 classification by emphasizing heterocyclic drug function