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Lactulose 10 gm/15 mL, Pint (473 mL) lactulose 10gm 15ml pint 473ml treatment constipation producing laxative effect osmotic action colon petmeds
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Generic Mfr Item #: 1011312 -

Pet Constipation Treatment

Lactulose is a non-digestible sugar that is used in the treatment of chronic constipation. Lactulose laxatives can be given as a syrup to soften and loosen stools. Caution should be used when administering Lactulose to diabetic animals as it contains lactose and galactose.

Lactulose is intended for the treatment of constipation in dogs and cats. The product is also used to treat hepatic encephalopathy, a brain disorder caused by liver failure and toxin buildup in the body.

Benefits of Lactulose:

  • Stool softener for cats and dogs
  • Helps prevent hepatic encephalopathy
  • Not usually associated with adverse events
  • Liquid form ensures easy administration
  • Works quickly to relieve symptoms

This product is for use in cats and dogs only. Do not give to diabetic or dehydrated animals without veterinarian approval. Do not give to other animals or to humans.

Use only as directed by your veterinarian. Follow precautionary statements. Overuse of this product may be harmful to health.


  1. Mix Lactulose with water, milk, or another liquid to improve the taste.
  2. Give cats and dogs 1 mL per 2 lbs. of body weight every 8 hours until symptoms improve.
  3. Reduce dose per your veterinarian's instructions to maintain benefits in cases of chronic constipation or liver disease.

Frequency of Use:

It may take up to 48 hours before an improvement in symptoms is seen.


Store Lactulose in its original container, tightly closed, and out of reach of children and pets. Keep at room temperature, away from excessive heat and moisture. Do not store Lactulose in the bathroom or next to the kitchen sink. Throw away expired product.

It is a violation of Federal Law to use this product in a manner inconsistent with its labeling.

Lactulose eases constipation by osmotic action in the colon; it breaks down into substances that pull water from the body and into the colon, where it softens stools. It treats encephalopathy by lowering colon pH and reducing ammonia absorption to decrease the concentration of ammonia in the blood.

Lactulose is available by prescription.

Active Ingredients (per 15 mL): Lactulose 10 g, Lactose (less than 1.6 g), Other sugars (less than 1.2 g)


Keep this product out of reach of children and animals. Do not use or store in or near open flame or heat.

Lactulose is intended for use in cats and dogs only. Not for use in other animals. Not for humans.

CAUTION: Lactulose contains galactose and lactose and should be used cautiously in diabetic animals.

Side effects of Lactulose may include bloating, increased flatulence, and cramping. Diarrhea and dehydration may indicate overdose and require veterinary attention.

Tell your veterinarian if your dog or cat is pregnant or nursing before giving this medication.

Use of antacids may decrease the benefits of Lactulose. Tell your veterinarian about any supplements or drugs your pet is taking before beginning treatment with this product.

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