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Medication discounts

Get Isoniazid for as low as $86.32, which is 69% off the average retail price of $274.28 for the most common version, by using a GoodRx coupon.
You can save more on select medications with GoodRx Companion. See which medications are eligible.

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Pricing is calculated based on your prescription details.
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 100mg | 30 tablets | N/A | $10.13 |
| 300mg | 30 tablets | $40.94 | $19.64 |
| 50mg/ 5ml | 360 ml | $274.28 | $86.32 |









GoodRx coupon prices last updated on 09/21/26.