Comparing Metronidazole vs Sulfamethoxazole / Trimethoprim
Metronidazole | Sulfamethoxazole / trimethoprim |
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Metronidazole | Sulfamethoxazole / trimethoprim |
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Prescription only
Metronidazole is an antibiotic that is particularly effective at treating infections caused by susceptible anaerobic bacteria and parasites. Alcohol and products containing propylene glycol should... View more |
Prescription only
Sulfamethoxazole/trimethoprim is an effective combination antibiotic; however, it may not be suitable for those with kidney or liver disease or folate deficiency. The risk of side effects may be... View more |
Related suggestions Bacterial Infection
Diverticulitis
Skin and Structure Infection
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More about Metronidazole | More about Sulfamethoxazole / trimethoprim | ||||||||||||||||
Ratings & Reviews | |||||||||||||||||
Metronidazole has an average rating of 6.1 out of 10 from a total of 2421 ratings on Drugs.com. 45% of reviewers reported a positive effect, while 28% reported a negative effect. |
Sulfamethoxazole / trimethoprim has an average rating of 4.9 out of 10 from a total of 1720 ratings on Drugs.com. 35% of reviewers reported a positive effect, while 47% reported a negative effect. |
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Drug Class | |||||||||||||||||
Side Effects | |||||||||||||||||
See also: metronidazole side effects in more detail. |
See also: sulfamethoxazole / trimethoprim side effects in more detail. |
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Generic Availability | |||||||||||||||||
Lower cost generic |
Lower cost generic |
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Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all metronidazole prices |
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Dosage Form(s) Available | |||||||||||||||||
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Brand Names | |||||||||||||||||
Flagyl, Flagyl 375, Flagyl IV, Likmez, Metro, Metro IV | Bactrim, Bactrim DS, Bactrim IV, Bactrim Pediatric, Bethaprim, Bethaprim Pediatric, Co-trimoxazole, Septra, Septra DS, SMZ-TMP DS, Sulfatrim Pediatric View more | ||||||||||||||||
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. | |||||||||||||||||
20 hours |
14 hours |
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CSA Schedule ** View glossary of terms | |||||||||||||||||
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 | |||||||||||||||||
Category B
No proven risk in humans
See the full pregnancy warnings document. |
Category D
Positive evidence of risk
See the full pregnancy warnings document. |
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Drug Interactions | |||||||||||||||||
A total of 349 drugs are known to interact with metronidazole:
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A total of 412 drugs are known to interact with sulfamethoxazole / trimethoprim:
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Alcohol/Food/Lifestyle Interactions | |||||||||||||||||
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Disease Interactions | |||||||||||||||||
First Approval Date | |||||||||||||||||
July 18, 1963 |
July 30, 1973 |
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WADA Class View World Anti-Doping Agency classifications. | |||||||||||||||||
N/A |
N/A |
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More Information | |||||||||||||||||
Patient resources | |||||||||||||||||
Professional Resources | |||||||||||||||||
Related Treatment Guide | |||||||||||||||||
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** 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.