Low Iodine Cat Food Brands

Top 3 Low Iodine Cat Foods On The Market

It can be difficult to find high quality cat food with so many options available.

We’ve created a list of the top low-sodium cat food options to make your search easier. Let’s take a look at each one!

1. Hill’s Prescription Food Y/D Feline Thyroid Health Canned Catfood

We start the list by introducing one of the most low-sodium options on the market. Hill’s Prescription Diet (y/d) is a special formula for cats with hyperthyroidism.

Hill’s claims that this formula is very low in iodine, and your cat will notice a significant improvement in thyroid health in just 3 weeks.

A low level of iodine can cause the thyroid gland not to produce enough thyroid hormones to continue producing more, and it will stop. It is a great alternative to radiotherapy and medications.

To prevent your cat from developing thyroid problems again, it is important to keep the diet consistent for their entire lives.

This canned wet food is meaty because it contains liver, pork, and its by-products, as well as chicken, water, and cornflour. It is sure to be a favorite of your cat.

The formula has a variety of vitamins and minerals, in addition to its delicious flavor. These ingredients help maintain the health of the cat’s bladder, heart, kidneys, and skin.

It has a good protein content of around 27%. This is vital for cats to keep their muscle mass up as they age. This can prevent senior cats from developing muscle wasting syndrome due to hyperthyroidism.

What We Didn’t Like

2. Hill’s Prescription Food Y/D Feline Thyroid Health Dry Cat Food

This is an excellent alternative to Hill’s Prescription y/d canned cat food. This is a great choice for cats who love kibbles.

You don’t have to get a prescription from your vet to purchase this type of food. However, it is better to wait until they recommend it.

This diet is similar to the prescription diet. It is extremely low in iodine which makes it great for hyperthyroidism of low or medium levels.

This one does not contain the same ingredients. The wet y/d version has a lot of chicken and pork, but this one has mainly whole grain corn, corn gluten meal, pork fat, soybean run, and eggs.

This one works in a similar way to the wet/d version. It is clinically proven to increase the health of your thyroid gland in just three weeks.

Hill’s ensured that this product was rich in all the necessary ingredients for your cat to live a happy and healthy life. Hill’s S+OXSHIELD is used to prevent the formation of urinary stones.

This formula is rich in omega 3 and other fatty acids that are important for senior cats, particularly when it comes to inflammatory relief.

What We Didn’t Like

3. Blue Buffalo Wilderness High Protein Grain-Free

Prescription diets for hyperthyroidism are often expensive.

They only work if they are used regularly, which can make it difficult for budget-conscious people to afford them.

Blue Buffalo has a wonderful solution.

It does contain traces of potassium Iodide but it is still lower in iodine that other formulas.

The formula is also very low in carbs and high in protein. It won’t promote insulin tolerance and fight the wasting symptoms associated with hyperthyroidism.

Why choose a low-iodine cat food?

Iodine, a natural element, is found in many nutritional sources. Iodine is an important component of many enzymes and hormones, both in humans and cats.

As a cat ages, hyperthyroidism can become more common. This happens when cats’ thyroid glands produce too much “thyroxine”.

This gland is located in your neck and is responsible for cat’s metabolism. There are several treatment options available for hyperthyroid cats.

Most vets recommend that you begin with the easiest option.

How low-iodine diets work

Hence, why are they so effective?

As you know, the cat needs iodine to make thyroxine hormone. Cats can’t make iodine on their own so food is their only source.

Consuming foods low in iodine will prevent your thyroid gland from producing the hormone.

This explanation is supported by one year evaluation research. This study involved 12 months of observation of 8 cats with moderate to severe hyperthyroidism. The study’s purpose was to assess the effectiveness of iodine restriction in cats’ diets.

Six out of eight cats were treated successfully. The remaining two cats had the highest levels of thyroxine at their initial dose.

Hyperthyroidism can be treated with food restrictions. The right low-iodine diet can be beneficial for your feline friend. I will discuss this in the next section.

What are the Complications of Hyperthyroidism in Cats?

You can treat hyperthyroidism in cats by doing one of these:

Hyperthyroidism can be fatal and progressive. High levels of thyroxine hormone can have many effects on different parts of the body.

These centers include the heart, liver, kidneys, central nervous system, and gastrointestinal system.

The cat’s constantly high metabolism means that it will use more resources to feed itself than it does to eat. This can lead to severe cases of muscle wasting, and even emaciation.

It will also cause a higher level of blood sugar for the cat. This can lead to glucose tolerance, and body cells that are resistant to insulin. It is also known as “prediabetes”.

This condition can quickly progress to feline diabetes mellitus if it isn’t treated.

What is the Daily Iodine Need of a Normal Cat?

It depends on the cat. Hill’s research shows that a cat requires 0.46parts/million (ppm) every day. Other studies suggested that the cat needs about 1.3 ppm.

If used alone, any cat food with a lower iodine content can be considered an iodine restricted diet.

Top Low Iodine Cat Food Companies

These brands have the best cat food to treat hyperthyroidism symptoms.


Purina is one the most well-known brands in the cat food industry. This brand was founded in 1894 and offers a variety of food options to suit the needs of both cats and dogs. Purina’s meat formulas are largely made from American meat, with the exception of their lamb which is sourced in New Zealand.

These food formulas have been approved by FDA and USDA to ensure your cat is in good health. There are many food options available that can help your cat maintain good health, regardless of its dietary requirements.

Purina has 15 lines of cat food and cat-related products that will ensure your cat is in top health. These 10 lines provide high-quality food.

However, in 2011 some cat food batches were recalled due to salmonella contamination. A lack of vitamins and minerals in Purina’s dog foods was also reason for their recall in 2016.

Hill’s Pet Nutrition

Hill’s Pet Nutrition is a top-rated brand that offers low-iodine cat food. It has many varieties to suit all dietary needs. Hill’s Pet Nutrition also makes dog food.

The Ideal Balance line is available for purchase. It contains natural ingredients that will support your cat’s health at different stages of life. There are many textures and formulas available in the Science Diet to satisfy all tastes.

Hill’s also offers two additional lines that can only be purchased with a veterinarian’s prescription: Hill’s Prescription Diet or Hill’s Health Advantage. Hill’s Prescription Diet was created to address the specific needs of cats with IBD or diabetes. This line offers low iodine cat foods formulas to treat hyperthyroidism.

The Hill’s Health Advantage formulas target five areas that impact the cat’s overall well-being. This food is designed to help manage your cat’s weight, enhance the function of your immune system, prevent urinary tract infections, promote better digestion, and maintain the skin and hair in great condition.

Hill’s cat food formulas are loved by cat owners because they contain real animal protein to meet their cats’ nutritional needs at all stages of their lives. Hill’s food formulas can be tailored to suit any feline friend, regardless of age or health condition. The food comes in both dry and moist textures so your cat is in good health.

Some Hill’s formulas have high amounts of carbs. High carbohydrate levels can lead to weight gain in cats, even though they need carbohydrates to keep them active and healthy. In 2019, their dog food was recalled due to toxicity concerns

Blue Buffalo

Blue Buffalo offers a variety of budget-friendly cat food options in five different lines. The Original Blue line has a wide range of delicious food options that are suitable for cats of all ages. Blue Freedom is an exclusive food line that does not contain any grains. This helps cats with digestive issues.

Blue Basics is a line that allows you to choose the cat’s favorite food. It has limited ingredients so you can eliminate allergy-causing ingredients. Blue Wilderness is high in meat, which helps to build lean muscle mass and keeps all organs healthy. Blue Natural is a special line that can only be purchased with a prescription from a veterinarian.

There are many options for dry and wet food so you can find the perfect formula for your cat. These recipes do not contain any protein by-products or fillers that could cause harm to your cat’s health. You can choose from chicken, beef or lamb as the main protein ingredients.

Many formulas contain extra vitamins and minerals to ensure your cat is in good health. Blue Buffalo offers many types of dog food.

However, Blue Buffalo’s food formulas were . Their cat food was recall in 2007 because it contained melamine. In 2010, a recall was made because certain food batches contained too much vitamin D.


What are the drawbacks of low-iodine diets for cats?

Iodine is used almost exclusively in the body’s production of thyroid hormone. A cat suffering from hyperthyroidism should not have to suffer any additional complications when on this diet.

Can a cat eat low-iodine cat food and take dietary supplements?

Iodine is often included in dietary supplements. It should not be taken. It is okay to consume vet-approved dietary supplement that doesn’t contain iodine.


It’s there. This guide contains everything you need about hyperthyroidism in cats and low-iodine cat food.

You can see that iodine-restricted diets have been clinically proven to improve thyroid health. It won’t cure your cat.

It’s an excellent alternative to radiotherapy and invasive surgery, especially for senior cats.

Hill’s Prescription Diety/d Feline Thyroid and Health Canned Cat Food is our recommendation as the best low-iodine cat food. Expert vets created the formula and guarantee that it will improve the health of your thyroid gland.

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