Erythromycin + Sulfonamide Tablets 500mg from Canada
Combination tablets with erythromycin and sulfamethoxazole/trimethoprim for urinary tract infections, mixed antibiotics in scored measured doses for retail. Classified in HTS 3004.20.0020 as erythromycin in combination with other antibiotics, excluding single agents.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals Annex IV: 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
• Fixed-ratio combinations need specific FDA combination drug approval; declare both APIs
• Synergy data required for classification
• Avoid generic labeling issues