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2937.90.40.00/Synthroid Active Ingredient Levothyroxine Sodium/Mexico

Synthroid Active Ingredient Levothyroxine Sodium from Mexico

Bulk levothyroxine sodium serving as the active ingredient in brand-name Synthroid tablets for hypothyroidism treatment. HTS 2937.90.4000 applies to this specific l-thyroxine sodium salt as a synthetic hormone amino-acid derivative.

Duty Rate — Mexico → United States

0%

Rate breakdown

9903.05.860%Universal product exemption (U.S. note 52(b))
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Import Tips

• Brand-specific CoA required; cross-reference with ANDA approvals for generic equivalence

• Monitor for DEA scheduling if combined with controlled substances (unlikely for pure API)

Synthroid Active Ingredient Levothyroxine Sodium from Mexico — Import Duty Rate | HTS 2937.90.40.00