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Get Isoniazid for as low as $12.27, which is 89% off the average retail price of $111.59 for the most common version, by using a GoodRx coupon.
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 100mg | 65 tablets | $110.17 | $11.90 |
| 300mg | 30 tablets | $125.14 | $12.27 |
| 50mg/ 5ml | 473 ml | $406.52 | $115.08 |
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GoodRx coupon prices last updated on 03/13/26.
