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Get Phentermine for as low as $10.57, which is 73% off the average retail price of $38.99 for the most common version, by using a GoodRx coupon.

| Dosage | Quantity | Retail price | GoodRx price |
|---|
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 8mg | 30 tablets | $273.48 | $14.08 |
| 37.5mg | 30 tablets | $31.57 | $16.85 |
| 15mg | 30 capsules | $41.88 | $14.54 |
| 30mg | 30 capsules | $41.00 | $12.89 |
| 37.5mg | 30 capsules | $42.68 | $14.17 |

GoodRx coupon prices last updated on 04/26/26.