Case Series
Switching from Natural Desiccated Thyroid to a Liquid Formulation of Levothyroxine for Hypothyroidism
Table 1
Excipients in commercially available thyroid treatments.
| Excipient | Branded or generic LT4 tablets | Natural dessicated thyroid | Liquid LT4 formulation |
| Animal-sourced ingredients | | X | | Corn starch | X | | | Dyes | X | | | Gluten | | | | Glycerol | | | X | Lactose | X | | | Magnesium or calcium stearate | X | X | | Microcrystalline cellulose | | | | Povidone | X | | | Sodium starch glycolate | X | | | Sucrose or dextrose | X | X | | Talc | X | | | Water | | | X |
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