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Available Thyroid Medication

Thyroid written on a black board

Thyroid Medication Table

Note: Liothyronine (T3) and Levothyroxine (T4) are bioidentical in each of the following medications. However, the following bioidentical medications may not be absorbed the same and monitoring may be necessary when switching from one medication to another. Additional or alternative therapies may be considered and appropriate depending on individual differences.

This material is not intended as a substitute for medical advice and is for informational purposes. Please consult a qualified health care professional for individual health and medical advice.

Medications Containing only Liothyronine (T3)

Medication NameManufacturerStrengths Available (mcg)Fillers (not all inclusive)Generic Available
SynthroidAbbott25, 50, 75, 88, 100, 112, 125, 137, 150, 175, 200, 300Non-porcine.
tablets
cornstarch and lactoseyes
Levothroid®Lloyd for Forest Labs25, 50, 75, 88, 100, 112, 125 137, 150, 175, 200, 300Non-porcine
tablets
yes
Levoxyl®King25, 50, 75, 88, 100, 112, 125, 137, 150, 175, 200Non-porcine
tablets
yes
UnithroidJSP25, 50, 75, 88, 100, 112, 125 137, 150, 175, 200, 300Non-porcine.
tablets
cornstarch and lactose
Levo-TTMMova for Alara25, 50, 75, 88, 100, 112, 125, 137, 150, 175, 200, 300Non-porcine
tablets
Tirosint .13, 25, 50, 75, 88, 100, 112, 125, 137, 150Non-porcine
capsules
Contains glycerin and water
(IBSA) in a soft gelatin capsule
Can not be cut or crushed
Levothyroxine (T4)compounding
pharmacies
Any strength may be compoundedNon-porcine
Capsules, gelatin or veggie caps
Synthroid®Abbott200, 500Non-porcine
injectable
LevothyroxineVarious200, 500Non-porcine
sodium
injectable

Thyroid Glandular Medications (derived from Porcine)

Medication NameManufacturerStrengths AvailableFillers (not all inclusive)Generic Available
Armour ThyroidForest Laboratories0.25, 0.5, 1, 1.5, 2, 3, 4, 5 (in grains)Desiccated porcinetabletsContains lactose and dextrose derived from corn1 grain=T3 9mcg/T4 38mcg
T3:T4 ratio is approximately 1:4
Nature-ThroidTMRLC Labs0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.25, 2.5, 3, 4, 5 (in grains)Desiccated porcine
tablets
Contains lactose1 grain=T3 9mcg/T4 38mcg
T3:T4 ratio is approximately 1:4
WesthroidTMRLC Labs0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.25, 2.5, 3, 4, 5 (in grains)Desiccated porcine
tablets
Contains lactose1 grain=T3 9mcg/T4 38mcg
T3:T4 ratio is approximately 1:4
NP ThyroidAcella0.5, 1, 1.5 (in grains)Desiccated porcine
tablets
Contains dextrose and Maltodextrin1 grain=T3 9mcg/T4 38mcg
T3:T4 ratio is approximately 1:4
Porcine Any strength may be compoundedWhole desiccated porcine thyroid
thyroid glandular containing T3 and T4 in an
capsules approximate 1:4 ratio
(compounding
pharmacies)

Medications Containing only Liothyronine (T3)

Medication NameManufacturerStrengths AvailableFillers (not all inclusive)Generic Available
CytomelKing5, 25, 50Non-porcine.
tablets
Contains cornstarchGenerics available
LiothyronineVarious5, 25, 50Non-porcine
Sodium tablets
TriostatJHP10mcg/mLNon-porcine
injectable Intravenous administration
Refrigeration required
LiothyronineX-Gen10mcg/mlNon-porcine
sodium
Refrigeration required
injectable
Liothyronine (T3)Any strength may be compoundedNon-porcine
capsules
(compounding
pharmacies)

Synthroid: Lactose, Acacia (tree bark) as fillers, hard to digest oftentimes.

Levoxyl: Microcrystalline cellulose, Croscarmellose sodium, magnesium Stearate, calcium sulphate dihydrate, sodium bicarbonate     – 50 mcg does not have dye

Tirosint: Gelatin, glycerin, water

Cytomel: calcium sulfate, gelatin, starch, talc, stearic acid, sucrose

Armour: Dextrose, microcrystalline Cellulose, Sodium Starch Glycolate, Calcium Stearate, Opadry White

Naturethroid: Colloidal Silicon Dioxide, Dicalcium Phosphate, Lactose Monohydrate, Magnesium Stearate, Microcrystalline Cellulose, Croscarmellose Sodium, Stearic Acid, Opadry II Clear, Porcine

Acella: Calcium Stearate, Dextrose Monohydrate,

Maltodextrin, Mineral oil

WP Thyroid (Westhroid): Inulin from Chicory Root,

Medium chain triglycerides, Lactose Monohydrate

ERFA: Corn starch, Magnesium Stearate, sugar, talc

CMP T3/T4: As few as possible * contact the pharmacy

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