Comparing Levothyroxine vs Methimazole
| Levothyroxine | Methimazole |
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| Levothyroxine | Methimazole |
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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
Prescribed for Hyperthyroidism. Methimazole may also be used for purposes not listed in this medication guide. |
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| More about Levothyroxine | More about Methimazole | ||||||||||||||||
| 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. |
Methimazole has an average rating of 5.5 out of 10 from a total of 112 ratings on Drugs.com. 35% of reviewers reported a positive effect, while 35% 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 Methimazole side effects |
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| Drug Class | |||||||||||||||||
| Generic Availability | |||||||||||||||||
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Lower cost generic |
Lower cost generic |
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| Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all Levothyroxine prices |
View all Methimazole 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 | Tapazole | ||||||||||||||||
| 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 |
13 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. |
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| Pregnancy Category | |||||||||||||||||
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Category A
Studies show no risk
See the full pregnancy warnings document. |
Category D
Positive evidence of 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 64 drugs are known to interact with Methimazole:
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| Alcohol/Food/Lifestyle Interactions | |||||||||||||||||
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No known alcohol/food interactions. This does not necessarily mean no interactions exist. Always consult your healthcare provider. |
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| Disease Interactions | |||||||||||||||||
| First Approval Date | |||||||||||||||||
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August 21, 2000 |
June 21, 1950 |
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| WADA Class View classifications | |||||||||||||||||
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N/A |
N/A |
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| More Information | |||||||||||||||||
| Patient Resources | |||||||||||||||||
| Professional Resources | |||||||||||||||||
| 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.
See also:
Synthroid
Synthroid (levothyroxine) treats hypothyroidism (low thyroid hormone) and different types of ...
Armour Thyroid
Armour Thyroid is used for hashimoto's disease, hypothyroidism, after thyroid removal, thyroid ...
Botox
Botox is used to treat chronic migraines, excessive sweating, bladder conditions, eye muscle ...
Euthyrox
Euthyrox (levothyroxine) is used to treat hypothyroidism and to treat or prevent goiter. Includes ...
Tirosint
Tirosint is used for hashimoto's disease, hypothyroidism, after thyroid removal, myxedema coma ...
NP Thyroid
NP Thyroid is used for hashimoto's disease, hypothyroidism, after thyroid removal, thyroid cancer ...
Levoxyl
Levoxyl treats hypothyroidism (low thyroid hormone) and treats or prevents goiter. Learn about side ...
Cytomel
Cytomel is used for hypothyroidism, after thyroid removal, myxedema, myxedema coma, thyroid ...
Unithroid
Unithroid is used for hashimoto's disease, hypothyroidism, after thyroid removal, myxedema coma ...
Levothroid
Levothroid is used for hashimoto's disease, hypothyroidism, after thyroid removal, myxedema coma ...
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.