Synthroid Active Ingredient Levothyroxine Sodium
Bulk levothyroxine sodium used as the active ingredient in Synthroid tablets is a synthetic thyroid hormone for hypothyroidism treatment. This l-thyroxine sodium salt is a chemically defined hormone reproduced by synthesis. It is classified under 2937.90.00 as a synthetic hormone amino-acid derivative used primarily for hormonal therapy.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If importing finished Synthroid tablets
Medicaments in measured doses for retail sale are classified in Chapter 30.
If the product is not used primarily as a hormone
Other hormone derivatives not primarily hormonal fall under 2937.19.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Do not import the finished Synthroid tablets under this item; those fall in Chapter 30
• Provide documentation that the bulk powder is not put up for retail sale
• Ensure compliance with Health Canada's API import requirements and maintain proper traceability records
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