Prescription savings
Stop paying too much for your prescriptions. Compare prices, get pharmacy coupons, and save up to 80%.Resources
About GoodRx
Health conditions
Medications & treatment
Access & affordability
Well-being
Medication discounts

Get Lactulose for as low as $96.27, which is 69% off the average retail price of $310.89 for the most common version, by using a GoodRx coupon.

Check your prescription
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 | 3000 ml | $55.29 | $52.00 |
| 15 packets of 10g | 2 cartons | $1,882.36 | $211.22 |
| 30 packets of 10g | 1 carton | $369.98 | $96.27 |
| 15 packets of 20g | 1 carton | $1,746.87 | $118.51 |
| 30 packets of 20g | 1 carton | $234.39 | $99.44 |
GoodRx coupon prices last updated on 08/21/26.