Comparing Flagyl IV vs Zosyn

View side-by-side comparisons of medication uses, ratings, cost, side effects and interactions.
Flagyl IV (metronidazole)	Zosyn (piperacillin / tazobactam)	Enter another drug to compare

View side-by-side comparisons of medication uses, ratings, cost, side effects and interactions.
Flagyl IV (metronidazole)	Zosyn (piperacillin / tazobactam)	Enter another drug to compare
Prescription only Prescribed for Bacterial Infection, Amebiasis, Aspiration Pneumonia, Bacteremia, STD Prophylaxis, Balantidium coli, Bone infection, Clostridioides difficile Infection, Deep Neck Infection, Dental... View more	Prescription only Prescribed for Aspiration Pneumonia, Bacteremia, Appendicitis, Appendectomy, Bone infection, Deep Neck Infection, Endometritis, Febrile Neutropenia, Intraabdominal Infection, Joint Infection, Kidney... View more	Related suggestions Skin or Soft Tissue Infection Cephalexin Doxycycline Clindamycin Keflex Amoxicillin Augmentin Pneumonia Levofloxacin Clarithromycin Azithromycin Doxycycline Ceftriaxone Amoxicillin Bone infection (Osteomyelitis) Cephalexin Clindamycin Ciprofloxacin Vancomycin Keflex Ceftriaxone Pelvic Inflammatory Disease Doxycycline Metronidazole Flagyl Azithromycin Clindamycin Ceftriaxone
More about Flagyl IV (metronidazole)	More about Zosyn (piperacillin / tazobactam)
Ratings & Reviews
Flagyl IV has an average rating of 4.5 out of 10 from a total of 2 ratings on Drugs.com. 0% of reviewers reported a positive effect, while 50% reported a negative effect.	Zosyn has an average rating of 8.0 out of 10 from a total of 5 ratings on Drugs.com. 60% of reviewers reported a positive effect, while 0% reported a negative effect.
View all 2 reviews	View all 5 reviews
Side Effects Experienced by Users Side effects are reported in Drugs.com user reviews and not clinically verified.
View all Flagyl IV side effects	View all Zosyn side effects
Drug Class
Amebicides Miscellaneous antibiotics	Penicillins/beta-lactamase inhibitors
Generic Availability
Lower cost generic approved	Lower cost generic approved
Pricing and Coupons * Prices are without insurance
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.
Get free Discount Card	Get free Discount Card

Dosage Forms
N/A	Intravenous powder for injection Intravenous solution
Brand Names
Other metronidazole brands include: Flagyl, Flagyl 375, Likmez, Metro, Metro IV	N/A
Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value.
20 hours	3.6 hours
CSA Schedule ¹ View glossary of CSA terms
N Not a controlled drug Is not subject to the Controlled Substances Act.	N Not a controlled drug Is not subject to the Controlled Substances Act.
Pregnancy Category
B Category B No proven risk in humans See the full pregnancy warnings document.	B Category B No proven risk in humans See the full pregnancy warnings document.
Drug Interactions
A total of 388 drugs are known to interact with Flagyl IV: 13 major drug interactions (36 brand and generic names) 370 moderate drug interactions (1209 brand and generic names) 5 minor drug interactions (20 brand and generic names)	A total of 76 drugs are known to interact with Zosyn: 8 major drug interactions (31 brand and generic names) 62 moderate drug interactions (276 brand and generic names) 6 minor drug interactions (33 brand and generic names)
Alcohol/Food/Lifestyle Interactions
Consumption of alcoholic beverages or products containing alcohol or propylene glycol during... View more	No known alcohol/food interactions. This does not necessarily mean no interactions exist. Always consult your healthcare provider.
Disease Interactions
Colitis Blood dyscrasias Neurologic toxicity Dialysis Liver disease Sodium Alcoholism	Colitis Coagulation abnormalities Renal dysfunction Renal dysfunction Hemodialysis Cystic fibrosis Seizures Sodium/potassium
First Approval Date
N/A	October 22, 1993
WADA Class View classifications
N/A	N/A
More Information
Side effects Drug interactions Dosage Pregnancy warnings Breastfeeding warnings Support group	Side effects Drug interactions Dosage Pricing and coupons Pregnancy warnings En español
Patient Resources
Flagyl IV uses Advanced reading	Zosyn uses
Professional Resources
N/A	Prescribing information
Related Treatment Guide
Bacterial Infection Amebiasis Aspiration Pneumonia Bacteremia STD Prophylaxis Balantidium coli Bone infection Clostridioides difficile Infection Deep Neck Infection Dental Abscess Dientamoeba fragilis Diverticulitis Dracunculiasis Endocarditis Giardiasis Helicobacter Pylori Infection Intraabdominal Infection Joint Infection Lemierre's Syndrome Meningitis Nongonococcal Urethritis Pelvic Inflammatory Disease Peritonitis Pneumonia Pseudomembranous Colitis Skin or Soft Tissue Infection Surgical Prophylaxis Trichomoniasis show all	Aspiration Pneumonia Bacteremia Appendicitis Appendectomy Bone infection Deep Neck Infection Endometritis Febrile Neutropenia Intraabdominal Infection Joint Infection Kidney Infections Nosocomial Pneumonia Pelvic Inflammatory Disease Peritonitis Pneumonia Skin or Soft Tissue Infection Urinary Tract Infection show all

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.

Medical Disclaimer

Comparing Flagyl IV vs Zosyn

See also:

Augmentin

Protonix

Lutathera

Bactrim

Keflex

Nexium

Cipro

Zithromax

Prilosec

Rocephin

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Comparing Flagyl IV vs Zosyn

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