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Pricing is calculated based on your prescription details.

Get Phentermine for as low as $10.35, which is 74% off the average retail price of $40.19 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.


| Dosage | Quantity | Retail price | GoodRx price |
|---|---|---|---|
| 8mg | 30 tablets | $280.52 | $12.22 |
| 37.5mg | 30 tablets | $31.23 | $16.35 |










Popular offers
250+ medications are free, with hundreds more under $10. Plans start at $9.99/mo. (when paid yearly). Terms apply.
GoodRx coupon prices last updated on 09/21/26.