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, 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 Levothyroxine | More about Synthroid (levothyroxine) | More about Armour Thyroid (thyroid desiccated) | ||||||||||||||||||||||||
| Ratings & Reviews | ||||||||||||||||||||||||||
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Levothyroxine has an average rating of 5.2 out of 10 from a total of 873 ratings on Drugs.com. 40% of reviewers reported a positive effect, while 46% 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 34% reported a negative effect. |
Armour Thyroid has an average rating of 6.4 out of 10 from a total of 253 ratings on Drugs.com. 52% of reviewers reported a positive effect, while 30% reported a negative effect. |
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| Side Effects Experienced by Users Side effects are reported in Drugs.com user reviews and not clinically verified. | ||||||||||||||||||||||||||
View all Levothyroxine side effects |
View all Synthroid side effects |
View all Armour Thyroid side effects |
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| Drug Class | ||||||||||||||||||||||||||
| Generic Availability | ||||||||||||||||||||||||||
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Lower cost generic |
N/A |
N/A |
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| Pricing and Coupons * Prices are without insurance | ||||||||||||||||||||||||||
View all Levothyroxine prices |
View all Synthroid prices |
View all Armour Thyroid prices |
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| Dosage Forms | ||||||||||||||||||||||||||
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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 Drug half-life is the time required for plasma concentration to reduce to half its original value. | ||||||||||||||||||||||||||
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240 hours |
240 hours |
168 hours |
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| CSA Schedule 1 View glossary of CSA 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 239 drugs are known to interact with Levothyroxine:
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A total of 239 drugs are known to interact with Synthroid:
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A total of 233 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 classifications | ||||||||||||||||||||||||||
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N/A |
N/A |
N/A |
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| Related Treatment Guide | ||||||||||||||||||||||||||
1 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.