L-Tryptophan Powder from Canada
L-Tryptophan Powder is an essential amino acid used in dietary supplements for sleep and mood support. Falls under HTS 2922.49.80.00 as a simple amino acid with carboxyl oxygen function only, distinct from heterocyclic derivatives in other headings.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Submit structure confirmation to verify single oxygen function; ensure GMP certification for supplement imports; monitor for banned substance lists in sports nutrition