Comparing Flagyl vs Imodium
| Flagyl (metronidazole) | Imodium (loperamide) |
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| Flagyl (metronidazole) | Imodium (loperamide) |
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|---|---|---|
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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 and OTC
Prescribed for Irritable Bowel Syndrome, Traveler's Diarrhea, Diarrhea - Chronic, Diarrhea - Acute, Diarrhea. Imodium may also be used for purposes not listed in this medication guide. |
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| More about Flagyl (metronidazole) | More about (loperamide) | |
| 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. |
Imodium has an average rating of 7.7 out of 10 from a total of 29 ratings on Drugs.com. 66% of reviewers reported a positive effect, while 17% 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 Imodium side effects |
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| Drug Class | ||
| Generic Availability | ||
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N/A |
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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. |
We could not find an exact match for this medicine. Try searching the Price Guide directly. |
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| Dosage Forms | ||
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N/A |
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| Brand Names | ||
| Other metronidazole brands include: Flagyl 375, Flagyl IV, Likmez, Metro, Metro IV | Other loperamide brands include: A-D Anti-Diarrheal, Anti-Diarrheal, Diamode, Diar-Aid, Imodium A-D, Kaopectate II, Neo-Diaral, Up and Up Anti-Diarrheal Solution | |
| 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 |
10.8 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 B
No proven risk in humans
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 379 drugs are known to interact with Flagyl:
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A total of 352 drugs are known to interact with Imodium:
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| Alcohol/Food/Lifestyle Interactions | ||
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| Disease Interactions | ||
| First Approval Date | ||
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July 18, 1963 |
N/A |
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| WADA Class View classifications | ||
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N/A |
N/A |
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| More Information | ||
| Patient Resources | ||
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N/A |
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| 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.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.