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.

Can Cats Drink Lactaid? Vet-Approved Nutritional Science & Info

Share

Can Cats Drink Lactaid

Lactaid is a lactose-free milk product, free from the sugar lactose found in milk. It is intended as milk suitable for those who are lactose tolerant. Many cats are lactose intolerant, and therefore, as a cat owner, you might be curious if Lactaid is safe for your pet cat.

Lactaid isn’t toxic for cats and is considered safe for them; however, it isn’t particularly healthy for cats either, and it’s best if you don’t offer this milk to your pet cat.

Read on as we explore this product in more detail.

divider 2 cats

Can Cats Drink Lactaid?

Lactaid is a series of lactose-free products, including milk 1. Cow’s milk isn’t inherently toxic for pet cats, and the primary concern for most adult animals is that they are lactose intolerant, so milk isn’t considered healthy for them.

Lactaid milks are marketed as lactose-free, this is achieved by adding the enzyme lactase to their products, which essentially allows the lactose to be digested by the body. This would help a lactose intolerant cat digest the product without the unwanted side effects of an upset stomach, bloat, or discomfort.

The following Lactaid products are considered safe for cats.

  • Lactaid Whole Milk
  • Lactaid Fat-Free Milk
  • Lactaid Lowfat 1% Milk
  • Lactaid 2% Milk

The nutritional value of each of these products varies 2; however, they are all considered lactose-free and safe for cats. Other products by the company, such as their sour-cream or their protein milk, are not particularly healthy for cats and should be avoided. The same goes for their chocolate milk.

It is important to note that just because something is safe for your cat, it does not necessarily mean that it is healthy for them.

Lactaid Reduced Fat
Image By: Eric Glenn, Shutterstock

Is Lactaid Healthy for Cats?

Of course, Lactaid does not contain any lactose so your cat should not get an upset stomach when they consume it. However, that does not mean that you should just provide your feline with all the Lactaid they can drink.

While it likely wouldn’t cause issues with lactose, it may nonetheless be too much for your cat to handle. For instance, cats that are on a relatively monotonous diet (eating the same food for a long time on a daily basis) have a microbial biome in their gut that adapts to handling that specific diet. If your cat isn’t used to drinking Lactaid, the odds of them having a bad experience are pretty high.

If you do want to feed your cat Lactaid, you should do it slowly, and you should consult a veterinarian beforehand. Start with only a tablespoon or two and then increase it. If your cat handles it fine, then they can probably have more. Still, you shouldn’t go overboard, as drinking too much Lactaid can make your pet sick.

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

Lactaid is not particularly healthy for cats. It does not contain many nutrients that cats are often low in. If your feline is eating their normal food, then they shouldn’t need to be supplemented with Lactaid.

Cats do not need milk. If you do include Lactaid, then it should function like a treat and not be given every day or in high amounts.

With that said, there are a few downsides to introducing Lactaid into your cat’s diet.

Get Free Cat Food Recall Alerts!

Have a cat? Stay on top of cat food recalls here




The Downsides of Lactaid

A tiny amount of Lactaid is probably not going to harm your feline. However, there are several downsides to introducing Lactaid to your cat’s diet. While your feline may really love the taste, some of these downsides may prove to be too much for your feline.

Glass of milk
Image By: Pezibear, Pixabay

Potential of Stomach Upset

Anytime you feed your cat something new, you risk the chance that they’ll develop stomach upset. While Lactaid does not contain much risk with lactose, many cats may still experience stomach problems after consuming it. The odds of a problem are higher if your feline has a more sensitive stomach. However, there is no way to tell 100% how a cat will react without simply trying it.

No one wants their cat having diarrhea and an upset stomach—even if it is only for a few hours. However, that is a chance you take when you give your feline Lactaid.

Replacing More Nutritional Foods

While Lactaid does have some vitamins and minerals, it is not a complete food for cats. Your cat should be consuming most of their calories from their usual cat food.

If you feed too much Lactaid to your cat, you risk your feline getting more and more of their calories from Lactaid. Over time, this may prevent them from eating all of the cat food that they should, which can cause nutritional deficiencies.

Of course, a small amount of Lactaid is not likely to cause this problem. However, if you provide Lactaid daily and in high amounts, it can cause problems over a long period.

It isn’t that Lactaid is bad for cats—it just isn’t nearly as nutritional as cat food. Cats should be on a species-appropriate diet that is primarily high quality animal protein and fats.

can cats drink milk
Image By: Katrina Brown, Shutterstock

Causing Finicky Eating

Another potentially serious downside of Lactaid is that it can cause your cat to become picky about what they eat. If you allow your cat to feast on Lactaid, they may begin to expect more of it. Cats are fairly picky anyway, so any excuse for them to be even pickier can make things very difficult for their owners.

For instance, your cat may begin to refuse their regular cat food, especially if you’re providing them with substantial amounts of Lactaid. They may hold out until you provide them with their favorite food, eating minimal amounts of their usual cat food.

Alternatively, they may reject other treats and only want Lactaid. Typically, this isn’t a huge problem. But it can make feeding them supplements and more nutritionally-complete treats difficult.

Even if your cat doesn’t reject their current food, they may reject future foods unless they taste like Lactaid. If you need to switch your cat’s food in the future, you may have a harder time.

divider 2 cats

What About Regular Milk?

It is a common misconception that milk is good for cats. While you may see it given in the movies and children’s books, most cats cannot actually drink regular milk. Cats may like the taste of milk and be more than willing to drink it if it is offered, but most cats are lactose-intolerant.

In other words, they cannot digest lactose well, which is one of the main sugars in regular milk. In the end, this will result in diarrhea and stomach upset.

Many people inaccurately assume that kittens can tolerate cow’s milk. This, too, is a misconception. The nutritional profile of a cat’s milk and cow’s milk is entirely different. A mother cat’s milk is far higher in protein and fat when compared to cow’s milk and only contains around 4% lactose 3.

In addition, cow’s milk does not contain the other nutrients and antibodies that are found in a cat’s milk. It is also very high in lactose when compared to cat’s milk, meaning that a kitten’s ability to digest it is very poor. This is the reason why most kitten milk replacers are made of goat’s milk, which is significantly lower in lactose when compared to cow’s milk.

As they grow older, kittens have an even lower ability to handle lactose. Almost all adult cats are lactose intolerant and older cats will be more sensitive to lactose than younger cats.

milk-pixabay
Image Credit: Couleur, Pixabay

divider 2 catsConclusion

Lactaid has enzymes added to it which neutralize lactose, which is a milk sugar that cats usually can’t digest. Many cats are lactose-intolerant, which means that lactose will cause stomach upset. Because Lactaid does not include lactose, cats can typically eat it without a huge problem.

However, some cats may still have problems, especially if they have more sensitive stomachs. Even if your cat can drink Lactaid without a problem, too much consumption can push out their normal cat food from their diet. Eventually, this may lead to nutritional deficiencies, since Lactaid does not contain all of the nutrients your feline requires.

Plus, Lactaid can often lead to picky eating as well, particularly when it is given regularly. Your cat may just learn to expect this treat and refuse to eat anything else.

In the end, it is often best to avoid Lactaid, even if your cat can technically drink it.


Featured Image Credit: ChristopherPluta, Pixabay

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




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

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

Rescue Cats Deserve Beautiful Endings

We all know that beauty is only skin deep, and that scars always tell a story, and this is one cat with a...

Ask Dr. Paola – Help! My Cat Gets Diarrhea from Wet Food! (March 23, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Cat Shampoo Alternatives That Are Already in Your House

If your cat has ever gotten into something disgusting and you’ve found yourself without cat shampoo, we’re here to help. Before you panic...

Licky Treats: A Scientific Investigation into the Tube-Based Delights Taking Over Modern Cat Households

By Professor Lucifer Fluffovich, Department of Applied Snackology Human civilisation has produced many inventions of questionable usefulness: vacuum cleaners, pyramids, and the laser...

More related

Is Catnip Safe for Cats? Vet-Reviewed Facts & FAQ

If you use catnip to manage your cat’s anxiety, you’d know how beneficial this plant is. It is a popular herb that helps...

Why Are There So Many Cats In Istanbul? The Wonderful Relationship Between the City & Its Cats

Istanbul’s cats are famous the world over. They welcome people in tea houses and restaurants, ride ferries, and buses, and generally enjoy hanging...

American Shorthair Cat Breed: Info, Pictures, Temperament & More

The American Shorthair is one of the most popular breeds in America. Despite their popularity, not many people know about or understand the...

10 Senior Cat Health Problems: Vet-Verified Common Issues

Like people and other animals, cats start to show signs of aging as they reach their senior years. Typically, 10 years is considered...

Keep reading

Can Cats Eat Pecans? Vet-Approved Facts & FAQ

Cat owners around the world know that they must be careful about where they leave food lying around. Felines can jump up onto benches and shelves to reach food items that have been left out and, in some cases, even...

Can Cats Eat Pecans

Is Lysol Toxic To Cats? Ver Reviewed Concerns & Safety Tips

When you adopt a pet, you will probably find yourself cleaning more often. However, many of the cleaners that we use are filled with harsh chemicals. They get the job done in the fight against germs, but they also have...

Cat-with-cleaning-equipment_absolutiamges_shutterstock

Why Is My Cat Peeing on My Bed All of a Sudden? 5 Vet-Reviewed Reasons

Have you ever had to ask yourself “why did my cat pee on my bed”? Us too. As cat owners, we love our cats but we don’t love their pee. It’s pungent and difficult to remove from places outside of...

cat-peeing-on-the-bed

What Is a Normal Heart Rate for a Cat? Vet-Approved Facts & Health Tips

Cats have smaller bodies than we do, so it’s only natural that they’d have faster heart rates. The normal cat resting heart rate is between 160–220 beats per minute (bpm). Recent physical activity will influence a cat’s heart rate, so...

veterinarians examining a grey cat

Why Is My Cat Drinking a Lot of Water Suddenly? 6 Vet-Reviewed Reasons

Cats, due to their nature and small size, don’t drink large amounts of water. The typical, healthy house cat will drink about 5 ounces of water daily, just over half a cup. Many cats drink less water, however, depending on...

cat drinking water

Why Does My Cat Have Dandruff? 11 Vet Reviewed Causes & Treatment

Perhaps you’ve noticed some white flaky bits on your cat’s skin or in their coat and you were wondering about it. Cats have the propensity to experience dandruff in much the same way that we do. A little bit of...

siamese cat fur with dandruff

9 Holiday Plants That Pose a Danger to Cats (With Pictures)

Other than the baking and gift-purchasing aspects, part of gearing up for the holidays is decorating. Some decorating involves trees and plants, but when you have a cat running around, you must ensure your pet’s safety. Unfortunately, some of the...

mistletoe with ribbon hanging on the door

Can Cats Eat Corn? Vet-Approved Nutritional Facts & FAQ

Corn is a common side dish in many culinary traditions. It’s sweet, delicious, and healthy, making it a favorite among people worldwide. You might have noticed that corn is also a common ingredient in many cat foods. Still, you know...

Can Cats Eat Corn

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.