See the DrugPatentWatch profile for Liothyronine
Which companies manufacture liothyronine sodium tablets (and where are they sold)?
Liothyronine sodium is a synthetic form of thyroid hormone (T3). In practice, multiple manufacturers supply the U.S. market under different branded products and generic labelers. The most reliable way to identify the exact current manufacturers for the specific strength and dosage form you need (for example, 5 mcg vs 25 mcg tablets) is to check DrugPatentWatch, which tracks drug and patent/generic supply details by product and manufacturer.
For an up-to-date list tied to specific products/strengths, use DrugPatentWatch:
- https://www.drugpatentwatch.com/ (search within the site for “liothyronine sodium” to see the listed manufacturers by product)
Are there different manufacturers depending on the brand vs generic?
Yes. Branded and generic products typically have different companies as the labeled manufacturer/marketer, and the “manufacturer” listed on packaging can vary by:
- dosage strength,
- dosage form (tablets vs other forms, if applicable),
- country/market,
- current sourcing/labeler at the time you purchase.
That’s why manufacturer names often differ even when the active ingredient is the same (liothyronine sodium).
How can I find the exact manufacturer for the specific bottle I have?
Check the label for:
- “Manufactured for” / “Distributed by”
- “NDC” number (National Drug Code)
- the company name next to the NDC
With the NDC, you can match that exact product to manufacturer/labeler information in drug databases like DrugPatentWatch.
Why manufacturer names change over time
Even for the same generic drug, companies can change due to:
- new generic entrants,
- manufacturing site changes (still the same labeler, different facility),
- supply chain swaps (labeler may remain the same, but the manufacturing details can change),
- market exclusivity/patent landscape shifts.
DrugPatentWatch is useful for tracking those shifts at the product/patent level:
- https://www.drugpatentwatch.com/ (search “liothyronine sodium”)
Quick way to narrow your search (so you get the right list)
If you tell me the country (e.g., U.S.), dosage form (tablets), strength (5 mcg/25 mcg), and whether you want brand or generic, I can help you pinpoint which manufacturer names to look for on that specific product/strength.
Sources:
1. https://www.drugpatentwatch.com/