Comparing Azithromycin vs Metronidazole
| Azithromycin | Metronidazole |
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| Azithromycin | Metronidazole |
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Prescription only
Azithromycin is an antibiotic used to treat a variety of different infections. It has the distinct advantage of once-daily dosing; however, diarrhea is a common side effect. Prescribed for Bacterial... View more |
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 |
Related suggestions Bacterial Infection
Skin or Soft Tissue Infection
Skin and Structure Infection
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| More about Azithromycin | More about Metronidazole | ||||||||||||||||
| Ratings & Reviews | |||||||||||||||||
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Azithromycin has an average rating of 6.8 out of 10 from a total of 1306 ratings on Drugs.com. 54% of reviewers reported a positive effect, while 22% reported a negative effect. |
Metronidazole has an average rating of 6.0 out of 10 from a total of 2431 ratings on Drugs.com. 44% of reviewers reported a positive effect, while 29% 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 Azithromycin side effects |
View all Metronidazole 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 Azithromycin prices |
View all Metronidazole prices |
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| Dosage Forms | |||||||||||||||||
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| Brand Names | |||||||||||||||||
| Azithromycin Dose Pack, Z-Pak, Zithromax | Flagyl, Flagyl 375, Flagyl IV, Likmez, Metro, Metro IV | ||||||||||||||||
| Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value. | |||||||||||||||||
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53 hours |
20 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 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 372 drugs are known to interact with Azithromycin:
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A total of 378 drugs are known to interact with Metronidazole:
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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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November 01, 1991 |
July 18, 1963 |
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| WADA Class View classifications | |||||||||||||||||
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N/A |
N/A |
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| More Information | |||||||||||||||||
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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.