Source Naturals Riboflavin 100mg Sublingual from Mexico
Sublingual 100mg Vitamin B2 tablets from aromatic synthesis for rapid absorption in therapeutic deficiency management. HTS 3004.50.10.00 for measured dose retail form.
Duty Rate — Mexico → 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
• Dissolution speed data for sublingual efficacy proof
• Taste-masking agent declaration without mixed status
• Quick-dissolve packing protects from humidity