Comparing Flagyl vs Nitrofurantoin
| Flagyl (metronidazole) | Nitrofurantoin |
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| Flagyl (metronidazole) | Nitrofurantoin |
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Prescription only
Flagyl is an antibiotic that is particularly effective at treating infections caused by susceptible anaerobic bacteria and parasites. Avoid alcohol while taking Flagyl and for three days after... View more |
Prescription only
Nitrofurantoin is an effective antibiotic with a low risk of inducing bacterial resistance that is used specifically to treat urinary tract infections caused by susceptible bacteria. Long-term use... View more |
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| More about Flagyl (metronidazole) | More about Nitrofurantoin | ||||||||
| Ratings & Reviews | |||||||||
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Flagyl has an average rating of 6.1 out of 10 from a total of 393 ratings on Drugs.com. 45% of reviewers reported a positive effect, while 29% reported a negative effect. |
Nitrofurantoin has an average rating of 4.5 out of 10 from a total of 1880 ratings on Drugs.com. 29% of reviewers reported a positive effect, while 52% 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 Flagyl side effects |
View all Nitrofurantoin side effects |
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| Drug Class | |||||||||
| Generic Availability | |||||||||
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Lower cost generic |
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| Pricing and Coupons * Prices are without insurance | |||||||||
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We could not find an exact match for this medicine. Try searching the Price Guide directly. |
View all Nitrofurantoin prices |
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| Dosage Forms | |||||||||
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| Brand Names | |||||||||
| Other metronidazole brands include: Flagyl 375, Flagyl IV, Likmez, Metro, Metro IV | Furadantin, Macrobid, Macrodantin | ||||||||
| Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value. | |||||||||
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20 hours |
1 hour |
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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 B
No proven risk in humans
See the full pregnancy warnings document. |
Category B
No proven risk in humans
See the full pregnancy warnings document. |
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| Drug Interactions | |||||||||
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A total of 388 drugs are known to interact with Flagyl:
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A total of 222 drugs are known to interact with Nitrofurantoin:
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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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July 18, 1963 |
February 06, 1953 |
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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 | |||||||||
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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.
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Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.