Synthroid Alternatives Compared
| Synthroid | Levothyroxine | Armour Thyroid |
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| Synthroid (levothyroxine) | Levothyroxine | Armour Thyroid (thyroid desiccated) |
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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
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
Prescribed for Hashimoto's disease, Underactive Thyroid, Hypothyroidism - After Thyroid Removal, TSH Suppression, 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 Synthroid (levothyroxine) | More about Levothyroxine | More about Armour Thyroid (thyroid desiccated) | ||||||||||||||||||||||||
| Generic Status | ||||||||||||||||||||||||||
| Ratings & Reviews | ||||||||||||||||||||||||||
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Synthroid has an average rating of 6.0 out of 10 from a total of 190 ratings on Drugs.com. 50% of reviewers reported a positive effect, while 36% reported a negative effect. |
Levothyroxine has an average rating of 5.1 out of 10 from a total of 869 ratings on Drugs.com. 41% of reviewers reported a positive effect, while 47% reported a negative effect. |
Armour Thyroid has an average rating of 6.4 out of 10 from a total of 250 ratings on Drugs.com. 53% of reviewers reported a positive effect, while 31% reported a negative effect. |
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| Side Effects | ||||||||||||||||||||||||||
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See also: Synthroid side effects in more detail. |
See also: levothyroxine side effects in more detail. |
See also: Armour Thyroid side effects in more detail. |
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| Pricing and Coupons * Prices are without insurance | ||||||||||||||||||||||||||
View all Synthroid prices and generic prices |
View all levothyroxine prices |
View all Armour Thyroid prices and generic prices |
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| Dosage Form(s) Available | ||||||||||||||||||||||||||
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| Other levothyroxine brands include: Eltroxin, Ermeza, Euthyrox, Eutroxsig, Evotrox, Levo-T, Levoxyl, Novothyrox, Thyquidity, Tirosint, Tirosint-Sol, Unithroid View more | Eltroxin, Ermeza, Euthyrox, Eutroxsig, Evotrox, Levo-T, Levoxyl, Novothyrox, Synthroid, Thyquidity, Tirosint, Tirosint-Sol, Unithroid View more | Other thyroid desiccated brands include: 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 211 drugs are known to interact with Synthroid:
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A total of 211 drugs are known to interact with levothyroxine:
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A total of 203 drugs are known to interact with Armour Thyroid:
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| First Approval Date | ||||||||||||||||||||||||||
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July 24, 2002 |
August 21, 2000 |
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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| 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.