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FLAGYL vs METRO I.V.

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 23, 2026·How we rate

Rating

64/100
New

Pharmacy pays

$0.10 /g
$0.10 /g

Type

RX
RX

Active ingredient

METRONIDAZOLE
METRONIDAZOLE

Manufacturer

Dosage forms

Capsule
Injectable

Drug class

Nitroimidazole Antimicrobial
Nitroimidazole Antimicrobial

Boxed warning

None
None

Half-life

about 8 hours
about 8 hours

Treats

Abscess, Amebiasis, Bacteroides Infections
Abscess, Amebiasis, Bacteroides Infections

Frequently asked questions

Which is cheaper, Flagyl or Metro I.V.?

Pharmacies pay about the same to acquire either one — roughly $0.10 per gm, per the CMS NADAC survey. That is not what you will be charged: your price is set by your insurer and the pharmacy, not by what the drug cost them.

What is the difference between Flagyl and Metro I.V.?

Both Flagyl and Metro I.V. share the active ingredient Metronidazole.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.