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HSChapter 29
U.S. imports of methionine (HS 293040) totaled $12.1M in April 2026, traded with 6 countries.
Importers of Methionine paid $1.5M in duties in April 2026 — an effective duty rate of 13% on $12.0M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataMethionine is an essential sulfur-containing amino acid classified entirely at 2930400000, used at commercial scale as a feed additive in poultry and swine nutrition to optimize protein utilization and reduce feed costs. DL-methionine (the synthetic racemic form) dominates global trade, with production concentrated in a small number of large chemical manufacturers; the hydroxy analog of methionine is separately classified under heading 2930 at a different 10-digit line. Imports of methionine as a feed additive are subject to FDA review under the Federal Food, Drug, and Cosmetic Act, and the product must conform to applicable feed-grade specifications. Importers should verify that the supplier holds the appropriate FDA facility registration.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Methionine (2930400000) covers the free amino acid in its DL or L form. The DL-hydroxy analog (2-hydroxy-4-methylthiobutanoic acid), which is a liquid feed supplement marketed as an alternative to DL-methionine, is classified at a separate 10-digit line under heading 2930 (2930904600). They are chemically distinct and are not interchangeable for classification purposes, even though both serve as methionine sources in animal nutrition.
Yes. Methionine used in animal feed is regulated by FDA's Center for Veterinary Medicine as a feed ingredient. Imported feed-grade methionine must come from an FDA-registered foreign supplier, and the importer may be subject to Foreign Supplier Verification Program (FSVP) requirements under FSMA. Consulting a licensed customs broker or regulatory specialist familiar with feed-ingredient imports is advisable.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2930400000 | METHIONINE | $12.1M | 12.50% | $1.5M |
METHIONINE
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| State | Imports | Exports | Balance |
|---|---|---|---|
| Alabama | $6.9M | -- | -$6.9M |
| California | $3.3M | -- | -$3.3M |
| North Carolina | $504K | -- | -$504K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| MOBILE, AL | $6.9M | -- | -$6.9M |
| LOS ANGELES, CA | $3.0M | -- | -$3.0M |
| LONG BEACH, CA | $636K | -- | -$636K |