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.

3 Food Sources of Thiamine for Cats (Vitamin B1): Vet Reviewed Options

Share

Munchkin cat eating

We all want our cats to be healthy, happy, and with us for as long as possible. That’s why we take them to the vet for checkups, feed them high-quality, protein-filled food, and keep them indoors most of the time.

However, when cats are not fed enough vitamin B1, they can suffer from a thiamine deficiency (the lack of vitamin B1). There are a few foods that will ensure your cat gets the thiamine they need to be healthy and happy. We’ll discuss them and the signs of thiamine deficiency below.

|Important to Note:

“Vitamin B1 is an essential dietary nutrient, and cats must get enough of it in their diets to stay healthy. The vitamin is involved in many processes throughout your cat’s body. Cats require two to four times more thiamine per day than dogs. Feeding your cat a balanced and complete diet is key to their wellbeing.”

divider cats oct 2024

Top 3 Food Sources of Thiamine for Cats

1. Whole Grains

Whole grains are a great source of thiamine for your feline pal. Of course, cats don’t require large portions of whole grains, but you can find them in many cat foods. Some of the most common grains you’ll see in pet food brands include maize, brown rice, and oatmeal.

Although whole grains are a reliable source of thiamine, cats typically shouldn’t get more than 10% of their calories from carbohydrates.1 Therefore, it’s best to avoid carb-heavy cat treats and focus on meals and treats higher in meat-based proteins. Unless your veterinarian determines that your cat has a thiamine deficiency, they will get enough vitamin B1 from high-quality cat food.


2. Pork/Beef/Fish

Pork, beef, and fish are excellent sources of thiamine for your kitty. Several cat food brands use the proteins in their formulations, and you should look for brands that list pork, beef, or fish as the first ingredient. Cats are obligate carnivores and must eat a lot of protein to stay healthy.

If you serve meat or fish, ensure it’s cooked thoroughly. Raw and inadequately cooked fish pose a risk of thiamine deficiency for your cat. This happens because some fish and shellfish’s raw flesh and viscera contain an enzyme (thiaminase) that destroys thiamine (Vitamin B1).

As with anything else you cook and feed your cat, do not add seasonings and spices such as salt, garlic, and onions. Feeding your cat cooked meat without any seasoning is best to prevent an upset stomach or toxic reaction to garlic and onions.

can cats eat pork
Image Credit: WiP-Studio, Shutterstock

3. Legumes

Several legumes can help with your cat’s thiamine levels as well. Legumes are often listed as ingredients in cat food, but if your cat consumes any of the legumes below, ensure they are cooked without seasonings.

Thiamine levels are decreased when legumes are cooked, and it’s better to serve your pet cat food with thiamine because it’s formulated to include the proper amount. However, the legumes below can boost their thiamine levels:

  • Chickpeas
  • Green beans
  • Kidney beans
  • Black beans
  • Lentils
  • Lima beans
  • Peas
  • Soybeans
  • Pinto beans

These are not the only sources of Vitamin B1. It can also be found in other foods like liver, eggs, brewer’s yeast, and asparagus.

divider cats oct 2024

Signs of Thiamine Deficiency in Cats

Now that you know which foods will ensure your cat has enough thiamine to be healthy, we’ll list the signs of a thiamine deficiency below.

  • Ventroflexion: the cat’s neck is bending towards the floor or curling
  • Circling
  • Falling
  • Incoordination
  • Spastic or abnormal gait
  • Dilated pupils
  • Head is tilting
  • Opisthotonos: when the head, neck, and spine arch backward
  • Seizures
  • Stupor

How Is Thiamine Deficiency Treated?

Thiamine deficiency is treated with oral or injected medication if your cat already shows neurological signs. However, providing adequate quantities of thiamine with a diet change is the treatment of choice for this condition.

You can prevent the deficiency from happening by feeding your cat high-quality, protein-filled, balanced and complete cat food. An experienced veterinarian can be a great assistance with this, so don’t hesitate to give a call to one.

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

Thiamine deficiency is a condition that affects cats and dogs. A lack of vitamin B1 causes severe health issues that can lead to death. If you see any signs of thiamine deficiency in your cat, rush your cat to the emergency clinic immediately. If caught in time, the condition can be treated, but it can be prevented by feeding your cat well-balanced cat food containing thiamine sources like the ones we discussed.


Featured Image Credit: Twinsterphoto, Shutterstock

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

Do Cats Cause Schizophrenia? Scientists Find a Link – Here’s What It Means

Being a fierce advocate (and occasional recipient of) mental health support and awareness, the term ‘crazy’ is not one I like to fling...

One in 100 Cats Gets Diabetes – Here’s How to Catch It Early

One in every 100 cats develops diabetes.1 That’s not a rare, unlucky condition reserved for cats with obvious health problems. It’s common enough...

Dramatic Rescue Turns Into Dramatic Reunion

What started as a routine call for the RSPCA became a heroic, five-hour rescue featuring one trapped and traumatized cat, an emotional family...

Ask Dr. Paola – Help! How Do I Know if it’s Ear Mites! (May 4, 2026)

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

More related

What To Feed A Colony of Feral Cats? 12 Vet Approved Tips & Advice

Scientists can only estimate the number of feral cats in the United States, although data suggest it’s around 30 million animals, with many...

Corneal Ulcer In Cats: Our Vet Explains the Causes, Signs & Treatment Options

The eyes are often called, “the windows to the soul,” and this is also true for our feline friends. We can decipher how...

My Cat Suddenly Doesn’t Want to Be Touched – 5 Vet-Approved Reasons

If your usually loveable cat suddenly doesn’t want to be touched, you probably have reason to be concerned. It isn’t normal for cats...

Can Cats Eat Spinach? Vet-Reviewed Nutritional Facts & FAQ

Cats can be picky about their meals, but some felines express interest in food usually enjoyed by humans and other omnivores. Some veggies...

Keep reading

Can Cats Eat Craisins? Vet-Approved Nutritional Benefits & Precautions

Our pets are our best friends, and we only want them to eat the best. However, sometimes you wonder if your cat might like some of the snacks you’re munching on. For instance, can cats eat craisins? Many foods are...

Can Cats Eat Craisins

Tube Feeding for Cats: Success, Safety, & When to Do It (Vet-Verified)

There is nothing more frustrating, and worrisome, than a sick cat who won’t eat. Cats may refuse to eat for many reasons. They may be feeling in pain or may have developed an aversion to their usual food. Most often...

A veterinarian feeds a cat using a tube

Open Farm vs Orijen Cat Food: 2026 Comparison, Ingredients, Price & More

What we feed our cats is important, but we all have different ideas of what is important in cat food. For example, the cat food brand Open Farm uses ethically sourced ingredients you can trace back to the source, while...

Open Farm VS Orijen

Do Cats Need Their Paw Fur Trimmed? Vet-Reviewed Tips, Facts & FAQs

Although cats typically do a very good job of grooming themselves, some do require a little help with trimming fur, and all cats need help with other care and maintenance requirements. One area that causes some debate between owners is...

close up paws of orange cat

How To Tell Which Cat is Dominant? 5 Vet Approved Signs To Look For

Contrary to the aloof and standoffish stereotype that’s been given to cats, cats have a wide range of personalities and temperaments. Some may have the independent personality that they’re known for, but many domesticated cats are very social and love...

two cats playing on a hammock at home

Can Cats Drink Plant Milk? Vet-Reviewed Facts & FAQ

Plant milk has become a popular alternative to cow’s milk and is available at grocery stores or coffee shops. With more people turning to vegan options and plant-based foods and drinks, it’s natural to wonder if they are appropriate for...

Can Cats Drink Plant Milk

When Will My Kitten Start to Purr? The Origin Story

The sound of a cat purring is one of the most relaxing and soothing noises you’ll ever hear. If you’re about to bring a new kitten home, you might wonder when they will start to purr so you can enjoy...

grey scottish fold kitten

Can Cats Eat Brussels Sprouts? Vet-Approved Diet Facts & FAQ

Cats are obligate carnivores, and their main source of nutrition comes from eating meat. You might be tempted to feed your cats greens every once in a while because greens can supplement their diet with vitamins and minerals that you...

Can Cats Eat Brussels Sprouts

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.