|Synthroid||GSK Original Formulation|
|Levothyroxine sodium |
confectioner's sugar (contains corn starch)
|Levothyroxine sodium |
|GSK New Formulation||Almus|
pre-gelatinized maize starch
purified talc silicon dioxide (Colloidal anhydrous silica)
|Forleys GS||ELTROXIN (Goldshield)|
|Thyroxine Sodium BP|
|Whole Thyroid Extract (Naturethroid)|
|Porcine Thyroid Powder, U.S. Pharmacopeia|
|THYROLAR or liotrix is not natural desiccated thyroid.It is synthetic T3 (L-triiodothyronine) and synthetic T4 (levothyroxine sodium) with a ratio of four parts T4 to one part T3. It contains no T2, T1 or calcitonin. The tablets need to be kept refrigerated.|
|INGREDIENT EXPLANATIONS: |
Microcrystalline Cellulose - synthetically derived fibre base (similar to plant-derived). It is typically used as a filler in tablets to provide volume and bulk.
Dicalcium Phosphate - derived from a mined ore. It is typically used as a binder in tablets to hold all the ingredients during compression.
Colloidal Silicon Dioxide - derived from a mined ore. Typically used as a natural desiccant intablets to provide a barrier from moisture and humidity.
Sodium Starch Glycolate - Synthetically derived starch molecule (similar to potato starch). It is typically used as a disintegrating agent in tablets to aid in proper disintegration of the tablet in the stomach.
Magnesium Stearate - Derived from a vegetable source (typically palm oil). It is typically used as a lubricating agent in tablets to aid in proper compression of the tablet.
Hydroxypropyl Methylcellulose - Derived from a plant cellulose base (typically cotton blend or wood pulp). It is typically used as a granulating agent in tablets to provide bulk and density to the tablet for proper compression, as well as part of a clear coating solution (with PEG).
Polysorbate 80 - An inactive water soluable emulsifying agent which blends the ingredients of mixtures and prevents separating.
Stearic Acid - derived from a vegetable source (typically palm oil). It is typically used as a binder in tablets to hold all the ingredients during compression).
Carnauba Wax - derived from the pores of the leaves of the Brazilian wax palm tree. It is used in the final stage in tablet coating to provide a complete seal.
Polyethylene Glycol (PEG) - Synthetically derived, water-soluble, waxy solid. It is used with Hydroxypropyl Methylcellulose as part of the clear coating solution.
Lactose Monohydrate - Present in traceable amounts as part of Thyroid USP (diluent)