Lactulose is an FDA-approved generic prescription drug primarily used to relieve constipation. Lactulose belongs to a class of drugs called osmotic laxatives, which work by pulling water back into the intestines from the surrounding tissue, making it easier to pass stools. Lactulose is also used to treat the loss of brain function caused by a buildup of ammonia in the bloodstream due to liver disease. On average, the retail price of Lactulose is $62.08 for 473, 10gm/15ml solution (quantity in ml)s of Lactulose, but you will pay only $8.59 for 473, 10gm/15ml solution (quantity in ml)s of generic Lactulosewith a free SingleCare Lactulose coupon.
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SingleCare’s prescription prices are based on multiple sources. The prices we publish are our best estimate, but we cannot guarantee that the price we display will exactly match the price you receive at the pharmacy. For an exact price, please contact your pharmacy and provide the BIN/GRP/PCN numbers shown on your SingleCare card.
Any SingleCare bonus savings, including the $3 signup bonus, may only be used once.
Prices updated: 12/05/2025
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Lactulose is an FDA-approved generic prescription drug primarily used to relieve constipation. Lactulose belongs to a class of drugs called osmotic laxatives, which work by pulling water back into the intestines from the surrounding tissue, making it easier to pass stools. Lactulose is also used to treat the loss of brain function caused by a buildup of ammonia in the bloodstream due to liver disease. On average, the retail price of Lactulose is $62.08 for 473, 10gm/15ml solution (quantity in ml)s of Lactulose, but you will pay only $8.59 for 473, 10gm/15ml solution (quantity in ml)s of generic Lactulosewith a free SingleCare Lactulose coupon.
Our price history metrics are calculated from aggregate prescription data that we receive from all participating pharmacies. This chart updates daily to show new price fluctuations. If a data point is missing from the chart, it is because we do not have enough data to produce a reliable figure.
| Pharmacy | Constulose Retail Price | Lactulose Retail Price | Lactulose SingleCare Price |
|---|---|---|---|
| CVS Pharmacy | - | $50.57 | $33.11 |
| Walmart | $28.38 | $32.32 | $13.40 |
| Walgreens | - | $17.34 | $14.19 |
| Kroger Pharmacy | - | $19.93 | $9.46 |
| Albertsons Pharmacy | - | $28.38 | $9.46 |
These prices are based on the last month of SingleCare prescription fill data by major pharmacy. This table updates daily to show the most accurate typical prices by pharmacies. If a data point is missing from the table, it is because we do not have enough data to produce a reliable figure.
Lactulose is an FDA-approved generic prescription drug primarily used to relieve constipation. Lactulose belongs to a class of drugs called osmotic laxatives, which work by pulling water back into the intestines from the surrounding tissue, making it easier to pass stools. Lactulose is also used to treat the loss of brain function caused by a buildup of ammonia in the bloodstream due to liver disease. On average, the retail price of Lactulose is $62.08 for 473, 10gm/15ml solution (quantity in ml)s of Lactulose, but you will pay only $8.59 for 473, 10gm/15ml solution (quantity in ml)s of generic Lactulosewith a free SingleCare Lactulose coupon.
Patients can usually expect to pay a cash price $62.08 for 473, 10gm/15ml solution (quantity in ml)s of Lactulose. The SingleCare price for Lactulose is $8.59 for 473, 10gm/15ml solution (quantity in ml)s of generic Lactulose. For all your prescription needs, a SingleCare prescription savings card can help you save as much as 80% at local pharmacies nationwide.
Check with your pharmacist about your copay for a Lactulose prescription, since it can vary based on your insurance plan. Also, ask your pharmacist to compare your copay to your cost using a free coupon from SingleCare to find the lowest prices. At $8.59 for 473, 10gm/15ml solution (quantity in ml)s of generic Lactulose.
Lactulose is usually covered by Medicare Part D and Medicare Advantage prescription drug plans as a generic, but Medicare may not cover brand-name Lactulose products (such as Kristalose). For patients without Medicare prescription coverage, a SingleCare discount coupon means the cost for Lactulose is only $8.59 for 473, 10gm/15ml solution (quantity in ml)s of generic Lactulose.
Lactulose is a generic prescription drug to treat constipation and loss of brain function due to liver damage. Lactulose is also the active ingredient in the brand-name prescription drug Kristalose (oral solution), from Cumberland Pharmaceuticals. Search the SingleCare website or app for more information about these drugs. A SingleCare discount card will save you on all versions of Lactulose at local pharmacies near you, such as Target or Walgreens.
Lactulose is a generic prescription medication primarily used to relieve constipation. Lactulose belongs to a class of drugs called osmotic laxatives, which work by pulling water back into the intestines from the surrounding tissue, making it easier to pass stools.
Lactulose is a synthetic sugar similar to lactose, a sugar naturally present in milk. Lactulose is taken as an oral solution, and the dose depends on the condition and symptoms.
Lactulose is also used as an oral solution or retention enema to treat the loss of brain function due to liver damage, called hepatic encephalopathy or portal-systemic encephalopathy. This is a rare condition in which ammonia builds up in the body and the brain begins to lose many of its functions, starting with confusion and forgetfulness and eventually progressing to unconsciousness and coma. Lactulose has laxative effects that can result in more ammonia being removed from the body in stools. Lactulose does not cure the underlying liver problem, but can significantly improve mental functioning.
Side effects of Lactulose are relatively minimal and include upset stomach, diarrhea, bloating, gas, nausea, and vomiting. High doses can cause problems like severe diarrhea or electrolyte imbalance.
Allergic reactions are rare and include itching, hives, swelling, and skin rash. Lactulose is similar to lactose, so patients with lactose intolerance or allergies will be more likely to suffer side effects or allergic reactions.
This is not a complete list of side effects that may occur. If you have concerns or questions about side effects, consult with your prescribing physician. Before taking Lactulose, talk to your doctor about your medical conditions and history and all of the medications you take, including prescription and over-the-counter drugs and vitamins or supplements.
Consult your doctor or healthcare provider for additional medical advice, drug information, and drug interactions.
After receiving her doctorate from the University of Pittsburgh School of Pharmacy, Karen Berger, Pharm.D., has worked in both chain and independent community pharmacies. She currently works at an independent pharmacy in New Jersey. Dr. Berger enjoys helping patients understand medical conditions and medications—both in person as a pharmacist, and online as a medical writer and reviewer.
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Prescription savings vary by prescription and by pharmacy, and may reach up to 80% off cash price. This is a medical discount plan. This is NOT insurance. This program offers you the opportunity to locate providers of various types of medical services who will offer their services to you at discounted rates. The range of discounts for medical or ancillary services provided under the plan will vary depending on the type of provider and service received. You are fully responsible for paying for all health care services but will be entitled to receive a discount from those health care providers in accordance with the specific pre-negotiated discounted fee schedule. This program does not guarantee the quality of the services or procedures offered by the providers. Except for prescription drugs which you will pay directly to the pharmacy at the time of purchase, all other services received through a program provider will be charged to the credit card on file in your member account. The charge will include an administrative fee for use of the program. Towers Administrators LLC is the licensed discount medical plan organization with its administrative office located at 4510 Cox Road, Suite 111, Glen Allen, VA 23060. SingleCare Services, LLC is the marketer of the discount medical plan organization including its website, singlecare.com, with its corporate office located at 99 High Street, Suite 2800, Boston, MA 02110. For additional information, including an up-to-date list of providers, or assistance with any issue related to program membership, please contact member support any time at www.singlecare.com, or by calling toll-free 844-234-3057, 24 hours, 7 days a week (except major holidays). Pharmacy names, logos, brands, and other trademarks are the property of their respective owners.
Blog articles are not medical advice. They are intended for general informational purposes and are not meant to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. If you think you may have a medical emergency, immediately call your physician or dial 911.
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© 2025 SingleCare Administrators. All rights reserved