Comparing Methimazole vs Spironolactone
| Methimazole | Spironolactone |
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| Methimazole | Spironolactone |
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Prescription only
Prescribed for Hyperthyroidism. Methimazole may also be used for purposes not listed in this medication guide. |
Prescription only
Spironolactone is a diuretic that may be used to remove excess fluid (edema) from the body, lower blood pressure, or treat hyperaldosteronism. It does not cause potassium loss from the body; however... View more |
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| More about Methimazole | More about Spironolactone | ||||||||||||||||
| Ratings & Reviews | |||||||||||||||||
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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. |
Spironolactone has an average rating of 6.9 out of 10 from a total of 703 ratings on Drugs.com. 58% of reviewers reported a positive effect, while 24% 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 Methimazole side effects |
View all Spironolactone 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 Methimazole prices |
View all Spironolactone prices |
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| Dosage Forms | |||||||||||||||||
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| Brand Names | |||||||||||||||||
| Tapazole | Aldactone, CaroSpir | ||||||||||||||||
| Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value. | |||||||||||||||||
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13 hours |
37 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 D
Positive evidence of risk
See the full pregnancy warnings document. |
Category C
Risk cannot be ruled out
See the full pregnancy warnings document. |
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| Drug Interactions | |||||||||||||||||
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A total of 64 drugs are known to interact with Methimazole:
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A total of 382 drugs are known to interact with Spironolactone:
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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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June 21, 1950 |
January 21, 1960 |
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| WADA Class View classifications | |||||||||||||||||
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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.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.