What is the generic of Flagyl?
The generic of Flagyl is Metronidazole. As of July 2026, the lowest verified cash price for Metronidazole 500 mg is $4.50 at Costco Pharmacy, based on 16 verified US pharmacy quotes — every price below is a real quote we verified, not an estimate.
| Pharmacy / source | Type | Verified cash price |
|---|---|---|
| Costco Pharmacy | pharmacy | $4.50 |
| Costco Pharmacy | pharmacy | $4.50 |
| Mark Cuban Cost Plus | pharmacy | $6.40 |
| BetterBuy Rx | coupon | $6.59 |
| Mark Cuban Cost Plus | pharmacy | $8.00 |
| BetterBuy Rx | coupon | $9.26 |
Last verified Jul 19, 2026. Cash prices only, from verified public retail and mail-order sources — no insurance copays, no estimates, no extrapolation across strengths or quantities. Prices change; confirm at the pharmacy counter. See our methodology.
Common questions
- What is the generic of Flagyl?
- The generic of Flagyl is Metronidazole. It contains the same active ingredient and is the version that drives the low cash prices below.
- How much does generic Flagyl (Metronidazole) cost without insurance?
- The lowest verified cash price we currently have for Metronidazole 500 mg is $4.50 at Costco Pharmacy, from 16 verified US pharmacy quotes. Prices change; confirm at the pharmacy before you buy.
- Is generic Metronidazole as effective as Flagyl?
- Generic Metronidazole must meet the same FDA standards for active ingredient, strength, and quality as Flagyl. Ask your pharmacist if you have questions about switching.