Levothyroxine Alternatives Compared
| Levothyroxine | Synthroid (levothyroxine) | Armour Thyroid (thyroid desiccated) |
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| Levothyroxine | Synthroid (levothyroxine) | Armour Thyroid (thyroid desiccated) |
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Prescription only
Levothyroxine replaces missing thyroxine and is the preferred medicine to treat hypothyroidism. The dosage of levothyroxine needs to be tailored for each individual and there is a fine line between... View more |
Prescription only
Synthroid replaces missing thyroxine and is used to treat hypothyroidism and other conditions associated with low thyroid hormone levels. The required dosage varies from person to person. Prescribed... View more |
Prescription only
Prescribed for Hashimoto's disease, Underactive Thyroid, TSH Suppression, Hypothyroidism - After Thyroid Removal, Thyroid Cancer. Armour Thyroid may also be used for purposes not listed in this... View more |
Related suggestions Hashimoto's disease (Chronic Lymphocytic Thyroiditis)
Hypothyroidism, After Thyroid Removal (Hypothyroidism, Post-Thyroidectomy)
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| More about Levothyroxine | More about Synthroid (levothyroxine) | More about Armour Thyroid (thyroid desiccated) | |
| Ratings & Reviews | |||
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Levothyroxine has an average rating of 5.1 out of 10 from a total of 872 ratings on Drugs.com. 41% of reviewers reported a positive effect, while 47% reported a negative effect. |
Synthroid has an average rating of 6.1 out of 10 from a total of 191 ratings on Drugs.com. 51% of reviewers reported a positive effect, while 35% reported a negative effect. |
Armour Thyroid has an average rating of 6.4 out of 10 from a total of 252 ratings on Drugs.com. 53% of reviewers reported a positive effect, while 31% reported a negative effect. |
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| Drug Class | |||
| Side Effects | |||
| Generic Availability | |||
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Lower cost generic |
Lower cost generic approved |
N/A |
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| Pricing and Coupons * Prices are without insurance | |||
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We could not find an exact match for this medicine. Try searching the Price Guide directly. |
We could not find an exact match for this medicine. Try searching the Price Guide directly. |
We could not find an exact match for this medicine. Try searching the Price Guide directly. |
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| Dosage Forms Available | |||
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| Brand Names | |||
| Eltroxin, Ermeza, Euthyrox, Eutroxsig, Evotrox, Levo-T, Levolet, Levoxyl, Novothyrox, Synthroid, Thyquidity, Tirosint, Tirosint-Sol, Unithroid View more | Other levothyroxine brands include: Eltroxin, Ermeza, Euthyrox, Eutroxsig, Evotrox, Levo-T, Levolet, Levoxyl, Novothyrox, Thyquidity, Tirosint, Tirosint-Sol, Unithroid View more | Other thyroid desiccated brands include: APur Thyroid, Bio-Throid, Nature-Throid, Niva Thyroid, NP Thyroid, Thyroid Porcine, Westhroid, WP Thyroid | |
| Half Life The half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value. | |||
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240 hours |
240 hours |
168 hours |
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| CSA Schedule ** View glossary of terms | |||
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Not a controlled drug
Is not subject to the Controlled Substances Act. |
Not a controlled drug
Is not subject to the Controlled Substances Act. |
Not a controlled drug
Is not subject to the Controlled Substances Act. |
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| Pregnancy Category | |||
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Category A
Studies show no risk
See the full pregnancy warnings document. |
Category A
Studies show no risk
See the full pregnancy warnings document. |
Category A
Studies show no risk
See the full pregnancy warnings document. |
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| Drug Interactions | |||
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A total of 225 drugs are known to interact with Levothyroxine:
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A total of 225 drugs are known to interact with Synthroid:
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A total of 218 drugs are known to interact with Armour Thyroid:
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| Alcohol/Food/Lifestyle Interactions | |||
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| Disease Interactions | |||
| First Approval Date | |||
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August 21, 2000 |
July 24, 2002 |
N/A |
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| WADA Class View World Anti-Doping Agency classifications. | |||
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N/A |
N/A |
N/A |
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| More Information | |||
| Patient resources | |||
| Professional Resources | |||
| Related Treatment Guide | |||
** The Controlled Substances Act (CSA) schedule information displayed applies to substances regulated under federal law. There may be variations in CSA schedules between individual states.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.