Find expert answers to your health questions so you can make the best decisions for yourself and your family.Prescription savings
Stop paying too much for your prescriptions. Compare prices, get pharmacy coupons, and save up to 80%.Resources
About GoodRx
Find expert answers to your health questions so you can make the best decisions for yourself and your family.Health conditions
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Popular offers
Get Isoniazid for as low as $39.50, which is 59% off the average retail price of $96.29 for the most common version, by using a GoodRx coupon.
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 100mg | 30 tablets | $8.99 | $8.47 |
| 300mg | 30 tablets | $80.62 | $20.70 |
| 50mg/ 5ml | 154 ml | N/A | $39.50 |
GoodRx coupon prices last updated on 07/25/26.
