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Get Metformin ER (Fortamet) for as low as $25.31, which is 97% off the average retail price of $900.91 for the most common version, by using a GoodRx coupon.


| Dosage | Quantity | Retail price | GoodRx price |
|---|---|---|---|
| 500mg | 90 tablets | $1,598.48 | $26.15 |
| 1000mg | 60 tablets | $1,544.95 | $28.76 |
Get an extra $10.00 off Metformin ER (Fortamet) and up to 90% off all prescriptions. Gold plans start at just $9.99/mo. Cancel any time.*
GoodRx coupon prices last updated on 04/26/26.
*Prices subject to change without notice. Sales tax may apply and is not included.