Prescription savings
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Medication discounts

Get Lactulose for as low as $22.60, which is 68% off the average retail price of $70.26 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 |
|---|
| 10g/ 15ml | 473 ml | N/A | $15.82 |
| 20g/ 30ml | 900 ml | N/A | $22.60 |
| 15 packets of 10g | 2 cartons | $1,719.20 | $81.45 |
| 30 packets of 10g | 1 carton | $418.97 | $81.45 |
| 15 packets of 20g | 2 cartons | $3,563.06 | $90.36 |
| 30 packets of 20g | 1 carton | $234.29 | $90.36 |
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 10/06/26.