Now Foods Riboflavin 400mg Sustain Release from Canada
Sustained-release 400mg Vitamin B2 tablets from modified aromatic synthesis for extended migraine prevention therapy. HTS 3004.50.10.00 as retail measured dose single vitamin product.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.60100%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Provide release profile data proving sustained therapeutic delivery
• Matrix composition disclosure for FDA active ingredient verification
• Higher potency requires stricter purity assays