Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

How Do You Give a Cat Lactulose? (7 Vet Approved Methods)

feeding cat using syringe

Lactulose is a stool softener often prescribed to ease feline constipation. The product pulls moisture into your pet’s feces, encouraging regularity by making bowel movements less dense. It’s also often prescribed for cats suffering from liver failure to reduce the amount of ammonia in their bloodstream. It’s commonly available as a liquid or crystal formulation. Read on for a step-by-step guide to giving your cat lactulose.

divider cats oct 2024

The 7 Vet Recommended Ways to Give a Cat Lactulose

1. Make Sure You Understand How Much Medication to Give Your Pet

Lactulose is a medication that veterinarians commonly prescribe to treat constipation and lower blood ammonia levels in cats, but the exact dose your cat should get and how often will depend on their weight and why they’re taking the medication. Ensure you understand exactly how much medication you should give your pet and how many times per day you’ll need to give it to them.


2. Try Mixing the Medication With Your Cat’s Food

Some cats don’t get worked up if you add medication to their food and mix it in. It’s often the easiest way to get cats to cooperate and, therefore, usually worth a try. Add the medication to a small amount of your cat’s wet food and feed it to them by hand; that way, you can tell if your cat has consumed it.

Avoid mixing the dose through your cat’s entire meal, as it may convince your companion not to eat, and if your pet takes a few bites and walks away, it can be challenging to determine how much of the medication they managed to get down.

Several cats dislike the taste of Lactulose, so there’s a good chance your pet may refuse to go near food containing the medication. If so, it may be time to move on to using a syringe.

siamese kitten eating from a stainless bowl
Image Credit: Pixel-Shot, Shutterstock

3. Prepare Your Space, the Medication, and Your Cat

Cats generally don’t enjoy being given medication, so it helps to have everything set up and ready to go ahead of time so you’re not trying to prepare your pet’s medication while trying to keep them from running off. Measure the medication beforehand, and don’t forget to put the lid back on the bottle when you’re done!

Find a place where you can sit down comfortably with your cat. Gently swaddling your pet in a towel before you get started may keep them calm and prevent you from getting scratched, and you can have a few treats on hand to reward your cat if things go well.


4. Allow Your Cat to Lick the Medication

While cuddling your pet on your lap, hold the syringe to the front of their mouth. Depress the stopper just enough so a drop of the medication comes out, and allow your cat to lick it. Some cats cooperate if allowed to lick medications at their own pace. Go slowly and give your pet plenty of time to swallow and breathe. If your cat doesn’t lick the medication, you may need to gently trickle it onto their tongue.


5. Put the Medication Directly into Your Pet’s Mouth

Hold your cat’s face with one hand, and use the syringe to gently open your pet’s lips at the side of their mouth, just behind the canines. You’ll see a gap in the teeth called the diastema behind the canines; gently insert the tip of the syringe and slowly give the dose.

Give your pet time to swallow and repeat the process until the syringe is empty. Go slowly and avoid squirting the medication towards the back of your pet’s throat, as it can cause them to choke. Cats mustn’t inhale the lactulose by accident, which can happen if you force it down too quickly. Also, don’t forget to give the syringe a good rinse with hot water after you’re done.

infusion of liquid medicine by a veterinarian
Image By: Zhuravlev Andrey, Shutterstock

6. Give Your Pet Lots of Praise

Most cats hate taking medication, so give your cat lots of love and praise when the process is done. Making the unpleasant as pleasant as possible can increase the odds of long-term feline cooperation, which can be incredibly important if your pet has a chronic condition requiring you to give them medication regularly.


7. Consider Speaking With a Veterinarian About Compounding

If your pet doesn’t cooperate with the regular liquid suspension, consider speaking with a veterinarian about the pros and cons of a compound prescription if they need to take lactulose long-term.

Compounds require a prescription and are made to order for pets by pharmacies that can make medications into liquids and crystals featuring cat-enticing flavors such as chicken, liver, fish, and shrimp. Some pharmacies can even make medications into tasty treats.

Need veterinary advice but can't get to the clinic? Catster recommends PangoVet, our online veterinary service. Talk to a vet online and get the answers and advice you need for your cat without having to leave your living room — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

divider cats oct 2024

Conclusion

Veterinarians often prescribe lactulose to treat feline constipation and to lower blood ammonia levels in cats suffering from liver disease. It is available in liquid and crystal form, but many cats dislike the liquid medication’s taste. Cats are sometimes willing to eat wet food with the medication mixed in, but it’s often necessary to gently drizzle it on your cat’s tongue using a syringe.

If your cat despises taking medication, consider asking your veterinarian about compounding. Some pharmacies can make veterinary formulations in flavors cats are willing to tolerate.


Featured Image Credit: Gumpanat, Shutterstock

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

2 Responses

  1. Why are so many cats constipated and in need of lactulose ? is there something missing in their diets?
    Should cats be eating a diet of dry food only?
    Thank you for your time.

    1. Hi Kathleen Chipelo, constipation in cats is multifactorial, depending on the case, but lack of hydration does play a role; and since many cats are not effective in drinking water, only dry diets are not recommended for them. We always recommend providing them with a water fountain or feeding them moisture-rich fresh or wet foods. https://www.catster.com/lifestyle/best-cat-water-fountains/

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

9 Cat-Themed Cocktail Recipes For Feline Loving Party Guests

If you’re hosting a cat-themed cocktail party soon, you’ll need some tasty beverage recipes to serve at your gathering. Why not stick with...

Will Music Make Cats Sleep? Vet Approved Facts & FAQ

The benefits of music for helping humans relax are well documented, but could it also help stressed kitties wind down and sleep? According...

A Star Is Born: The Vocal Stylings of Clutch

Hi, I’m Dr. Karyn! Read my introduction to learn more about me and meet my five hilarious cats: Clutch, Cyril, Alex, Zelda, and...

9 Amazing DIY Cat Carrier Plans You Can Make Today (With Pictures)

Every human cat companion needs a high-quality carrier for their buddy. Even if your cat dislikes leaving the confines of their home, there...

More related

11 DIY Cat Window Perches You Can Build Today (With Pictures)

Cats love to laze in the warm sun, and for indoor cats, it can sometimes be difficult for them to find a suitable...

Why Do Cats Drink Out of the Toilet? 6 Reasons & Vet-Reviewed Solutions

Cats drinking out of toilets can be unpleasant, but it does happen. If you have a cat that loves to drink out of...

‘Catnip Nation’ Seeks to Help Everyone Understand TNR

As journalist and filmmaker Tina Traster finished up her 30-minute documentary This House Matters, an examination of historical preservation in the Hudson Valley,...

Why Do Cat Eyes Glow in the Dark? Vet-Reviewed Feline Anatomy Facts

If you have ever been a cat owner, then you have likely been surprised walking down the hallway and seeing a pair of...

Keep reading

Why Do Cats Walk in Circles Before Lying Down? Facts & FAQ

Cats are known for their weird yet fascinating behavior, which can sometimes leave owners shaking their heads. One of the most peculiar behaviors that many cat owners have observed is their tendency to walk in circles for a minute or...

russian blue lying down

Why Does My Cat Stare at the Wall? Our Vet Discusses Common Reasons & What to Do

There are many things our cats do that confuse and confound us, and one behavior that can be quite concerning is when they start staring intently at a wall. Are they sleeping with their eyes open? Do they see something...

cat staring at the wall

Raw Paws Pet Food Review 2025: Pros, Cons, & Verdict

Raw Paws Pet Food is a company that makes dog and cat foods. They offer frozen food that comes in rolls, patties, or ground, freeze-dried food, as well as grain-free kibble for dogs. They also offer food toppers, chews, supplements,...

Raw Paws Cat Food Review

Can Cats Eat Fritos? Vet-Approved Alternatives & Risks

Our cats love getting into all kinds of goodies in the home. Fritos might be an odd request for most cats, but some cats may be attracted to the salty snack. If you find that your cat is drawn to...

Can Cats Eat Fritos

Do Bengal Cats Shed? Hypoallergenic Facts & FAQ (Vet-Reviewed)

Cats are at the forefront of the world right now. However, cat allergies are one of the world’s most common allergies, and even many people who are allergic to cats are trying to find a cat that they can keep....

Bengal cat sitting on the bed

12 Vet-Approved Ways to Calm a Cat Down at Night

We all love our cats, but if they’re suddenly full of energy as soon as the sun goes down and you’re trying to get to sleep, it can be a little frustrating. Cats are naturally more active at night time,...

cat sleeping in the dark

Should I Get a Kitten for My Cat? Vet-Approved Introduction Tips & FAQ

Introducing pets is an equally exciting and scary prospect for devout cat owners. Will they love one another and enrich each other’s lives in your absence? Or will they jockey for power and aggressively protect their territory, making life a...

cat-smelling-kitten

Are All White Cats With Blue Eyes Deaf? Vet-Reviewed Facts & FAQ

At some point, you’ve likely heard someone say that all white cats are deaf—particularly those with blue eyes. But is this factual? Not entirely! While white cats with blue eyes certainly are more prone to hereditary deafness—white cats, in general,...

turkish cat with blue eyes_love pattern_shutterstock