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Levo-T

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Levo-T

Levo-T™
(levothyroxine sodium) Tablets, USP

DRUG DESCRIPTION

Levo-T™ (levothyroxine sodium tablets, USP) contain synthetic crystalline L-3,3',5,5'-

tetraiodothyronine sodium salt [levothyroxine (T4) sodium]. Synthetic T4 is identical to that produced in the human thyroid gland. Levothyroxine (T4) sodium has an empirical formula of C15H10I4N NaO4•H2O, molecular weight of 798.86 g/mol (anhydrous), and structural formula as shown:

Levo-T (Levothyroxine Sodium) Structural Formula Illustration

Inactive Ingredients: Magnesium Stearate, NF; Microcrystalline Cellulose, NF; Colloidal Silicone Dioxide, NF; Sodium Starch Glycolate, NF. The following are the color additives by tablet strength:

Strength (mcg) Color Additive(s)
25 FD&C Yellow No. 6 Aluminum Lake
50 None
75 FD&C Red No. 40 Aluminum Lake
FD&C Blue No. 2 Aluminum Lake
88 FD&C Blue No. 1 Aluminum Lake
D&C Yellow No. 10 Aluminum Lake
D&C Red No. 30 Aluminum Lake
100 D&C Yellow No. 10 Aluminum Lake
D&C Red Lake Blend (D&C Red No. 27
Lake and D&C Red No. 30 Lake)
112 D&C Red No. 27 Aluminum Lake
D&C Red No. 30 Aluminum Lake
125 FD&C Yellow No. 6 Aluminum Lake
FD&C Red No. 40 Aluminum Lake
FD&C Blue No. 1 Aluminum Lake
150 FD&C Blue No. 2 Aluminum Lake
175 D&C Red No. 27 Aluminum Lake
D&C Red No. 30 Aluminum Lake
FD&C Blue No. 1 Aluminum Lake
200 D&C Yellow No. 10 Aluminum Lake
D&C Red No. 27 Aluminum Lake
300 D&C Yellow No. 10 Aluminum Lake
FD&C Yellow No. 6 Aluminum Lake
FD&C Blue No. 1 Aluminum Lake

Last reviewed on RxList: 7/10/2008
This monograph has been modified to include the generic and brand name in many instances.

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