10 Best Low Magnesium Cat Food -Reviews & Top By Brand

This article is on the best low magnesium cat food in the market that’s also low in phosphorous or ash. The links mentioned in this article give us a small amount of commission.

Many indoor cats struggle with various conditions that affect their bladder or urethra, known as urinary tract health. It can present difficulty and pain when urinating, increased frequency of urination, or blood in the urine. The litter box might not be the only place cats urinate; they may also urinate in corners, a sink, or a bathtub. Even though these issues can occur at any age, it is often seen in middle-aged, overweight cats who don’t get enough exercise.

A cat’s diet can usually support its urinary pH imbalance. Diets can vary in how they support urinary tract health. But it is essential to look at the restricted amounts of minerals, such as Magnesium and phosphorous. These can contribute to the development of urinary crystals and stone formation. It has been explained by Dr. Danielle Bernal, Global veterinarian with Wellness Natural Pet Food. When crystal causes painful urination, and the stones are painful to pass, urinary tract infections, blockages, or kidney problems arise in cats.

“Animal nutritionists typically formulate recipes that support more acidic pH urine concentration, creating an environment that helps crystal formation. In addition, wet diets are specifically formulated to support their urinary health through boosting hydration.”

Giving your cat a high-quality diet tailored for urinary tract health is the most valuable way to improve their comfort, long-term health, and longevity. In general, you should look for the best cat food with high moisture and low magnesium content. However, grain-fee cat food is generally better for kitties with urinary tract issues, so long as it does not contain high carbs like potatoes and peas. 

Below are some of the best low magnesium health cat foods available today.

Our Top Recommendations

S.no.Rank BrandsPrice Ratings
1.Best OverallEvanger’s EVx Restricted: Urinary Tract $54.52N/A
2.Best Runner upHill’s Science Diet Dry Cat Food Urinary & Hairball Control $55.448/10
3.Best WetHill’s Prescription Diet Multicare Urinary Care cat food $618.4/10
4.Best DryWysong Uretic Dry Cat Food $158/10
5.Best BudgetIAMS Adult Urinary Tract Health Dry Cat Food $99.2/10
6.Best For Senior CatsBlue Buffalo Weight Management + Urinary Care Wet Cat Food$558/10
7. Best VarietyPurina Pro Plan Urinary Tract Health Canned Cat Food $699/10
8.Best SupplementUnder the Weather Urinary Support Soft Chews$155/10
9.Best TopperNatura Petz Organics Urinary Tract$59.987/10
10.Best CalorieRoyal Canin Feline Urinary SO Moderate Calorie Dry $28.999.6/10

Our Best Low Magnesium Cat Food

Our Best Low Magnesium Cat Food
Our Best Low Magnesium Cat Food

We have covered the best food low in phosphorus. Here we intend to focus on those familiar with Magnesium, where we will share the reviews of common magnesium brands, including canned or wet and dry ones.

In addition, the following premium foods are also rich in nutrients that support the immune system’s functions, so your kitty can resist other infections. Meanwhile, they are low in minerals like Magnesium, which can contribute to the formation of stones in the urinary tract. 

#1. Evanger’s EVx Restricted: Urinary Tract – Best Overall

Evanger’s EVx Restricted Diets Urinary Tract formula is an excellent option for cats with urinary struvite crystals and urinary pH imbalances. Nutritionists and experts formulate it; their used ingredients are simple, recognizable, and developed in compliance with AAFCO standards for all life stages. 

This food contains just a few main ingredients (boneless chicken, chicken broth, tomato paste, cranberries, and blueberries) and essential vitamins and minerals with three unique components. 

It is grain- and gluten-free and has added omega-3 and -6 fatty acids to nourish skin and fur. A bonus is that the steel cans are bisphenol-A (BPA) free with the label printed on recycled paper. Although this recipe is not kosher, for those who require a kosher diet for their cat, Evanger has endorsed more than 40 recipes as kosher for cats by the Chicago Rabbinical Council.

Evanger’s Canned Pet Food has been striving to provide a healthier diet for pets for years and is a family-owned and operated company.


  • Chicken is the first ingredient
  • Includes digestive support ingredients
  • Contains Postbiotics
  • No prescription needed


  • Occasionally on back orders

#2. Hill’s Science Diet Dry Cat Food Urinary & Hairball Control – Best Runner Up

When your kitty eats this dry food, you will start to see improvement in various annoying symptoms. The formula is designed to lower the urinary tract’s pH level and provide a low amount of dietary Magnesium to protect your fur baby from FLUTD, struvite crystals, and stones. In addition, the formula contains natural fibers to reduce the formation of hairballs. 

The first ingredient in this dry cat food is real chicken, which is completely easy to digest and supports the formation of lean muscles. It contains antioxidants that help the immune system and fatty acids rich in vitamin E. In addition, it also improves skin and coat health, so your kitty feels well.

Unlike other formulas, it does not contain chicken by-products. If your kitty has sensitivity issues, it might not be best for her.


  • Dry formula to control the pH level of the urinary tract
  • It contains essential vitamins, minerals, antioxidants, and fatty acids
  • High-quality protein to promote lean muscles growth
  • It includes fibers to prevent the formation of hairballs
  • It does not contain chicken by-products


  • Not best for cats who have sensitive stomachs

#3. Hill’s Prescription Diet Multicare Urinary Care cat food – Best Wet 

The clinically-tested food is designed to reduce the risk of FLUTD as it controls the number of minerals in your cat’s diet. The Hill’s Prescription Diet Multicare Urinary Care cat food is lowering the P.H. level of the urinary tract to prevent the formation of struvite crystals and stones. The recipe contains bite-size, gently cooked real chicken to provide your cat with all the needed proteins to support the muscles’ health and bones.

The formula promotes better digestion with the high-quality combination of chicken and vegetables in this stew. The texture of stew contains the needed hydration if your cat is reluctant to drink enough water.

If your kitty is suffering from acute renal failure, this will be an excellent choice, as it is easy to digest. It also dissolves struvite crystal for several days. However, it is more expensive than other brands, so it might not be a good option for you if you have multiple cats in your house.


  • Clinically tested wet food
  • Lowers pH level and prevents recurrence of stones
  • Reduces pH level and prevents recurrence of stones
  • Provides your cat with the necessary hydration
  • dissolves struvite crystals


  • More expensive than other food types

#4. Wysong Uretic Dry Cat Food – Best Dry

 When you study the packaging of this brand, you can tell a lot of science and think about Wysong Uretic Dry Cat Food – a formula they have been developing for more than 30 years. A veterinarian creates the recipe. This food’s nutritional makeup takes a holistic approach by considering wellness, immune, and urinary systems.

The uretic dry formula contains higher levels of fresh, frozen, dried meats, organs, protein, and fat. The recipe is made with U.S.-based chicken and has cranberry extract to help lower urine pH.

Wysong is also conscious of micronutrients, including prebiotics, probiotics, enzymes, omega-3 fatty acids, and antioxidants. Also, they have added methionine, which promotes urine acidification. Also, small amounts of fruits and vegetables have been added to mimic what would happen in a prey’s stomach.

When feeding all dry foods, make a whole bowl of water available to your cat. 


  • No prescription required
  • A long history of developing the formula
  • Science-based nutrition


  • Not perfect for some cats with sensitive digestive systems

#5. IAMS Adult Urinary Tract Health Dry Cat Food – Best Budget

This dry food formula is made using real chicken and is specially designed to lower the pH level of the urinary tract. It is balanced and has zero fillers that can support your kitty’s health.

Real chicken is the first ingredient in the recipe, and it will support the growth of lean muscles. It contains omega-3 and -6 fatty acids to improve the coat and skin. 

Vitamin E will boost the functions of the immune system to keep your feline healthy. Moreover, the formula contains potassium and calcium to keep your cat heart-healthy without increasing the risk of struvite crystals or stones.

Suppose your cat will have better teeth when she eats this dry recipe because it reduces plaque build-up. The formula is not grain-free, so it might not suit your kitty if she is allergic to grains. It has lower fiber content and can cause constipation if your fur baby has digestive problems. 


  • It contains real chicken to lower the pH level of the urinary tract.
  • Complete with potassium and calcium to keep the heart healthy
  • This dry food contains fatty acids to boost the condition of the skin and coat
  • Keeping the teeth healthy to reduce the plaque


  • With grains
  • Lower-fiber content can cause constipation

#6. Blue Buffalo Weight Management + Urinary Care Wet Cat Food – Best For Senior Cats

Obesity can be a problem for seniors who become less active according to age, especially for indoor cats. Since some urinary issues are more common in senior, overweight, and obese cats, it makes sense to consider food that provides the ideal level of fat, calories, and fiber to help your kitty manage its weight as well as controlled mineral levels to keep urine pH lower to prevent crystal and stone formation.

Blue Buffalo W+U Weight Management and Urinary Care canned wet food is an excellent choice carried by many veterinarians. Chicken is the first ingredient of this recipe and has added plant fiber in the form of powdered cellulose, so your cat feels fuller despite being a lower-calorie food.

Blue Buffalo reports that its science-based formulas have been developed by a team of Ph.D. animal nutritionists, food scientists, and veterinarians.


  • Manage two problems with one food
  • Grain-free


  • Prescription required

#7. Purina Pro Plan Urinary Tract Health Canned Cat Food – Best Variety 

If your cat’s digestive system can suffer from more than one type of food, a variety is a beautiful way to give them a broader range of flavors and nutrients simultaneously.  

Purina Pro Plan Focus Classic Urinary Variety Pack comes as a case of 12, 24, or 36 cans. This pack can be purchased as four, eight, or twelve cans each of three flavors—Ocean Whitefish or Beef & Chicken, Chicken, and Turkey and Giblets—or as twelve cans each of two flavors—Ocean Whitefish and Salmon.

Each recipe contains less dietary Magnesium and is designed to lower urine pH. Purina Products are also available in the U.S. are manufactured in the U.S. and are widely available and are among the more affordable brands on the shelves today.


  • Nutritional and flavor diversity for your cat
  • No prescription needed


  • Meat by-products are the first ingredient
  • Added color

#8. Under the Weather, Urinary Support Soft Chews for Cats – Best Supplement

However, almost all urinary health cat foods are designed to offer your cat complete nutrition without any supplement. An additional supplement could be used with non-prescription foods to give your kitty’s health an extra boost in the right direction.

Under the Weather Urinary Support for cats is just one of many supplements made by this brand. Ingredients include N-acetyl glucosamine which supports an average pH balance in the urinary tract, and D-mannose and cranberry extracts which promote normal urinary tract health.

Research in humans and animals shows that D-mannose, an ordinary sugar, helps prevent bacteria from sticking to the bladder. And also, it tells about the urinary tract, reducing and preventing the recurrence of bacterial urinary tract infections.

This supplement is made in Vermont and veterinarian formulated. And also, this is free from grains, artificial flavors, and dyes. A bonus is that anytime a portion of the sale is donated to the Rafi Rescue Fund, the U.S. Supports the spay and neutering of pets in more populated areas of the U.S. and transportation to Vermont for adoption.


  • No prescription required
  • Incorporates D-mannose ingredient known to decrease urinary tract infections


  • Many inactive ingredients

#9. Natura Petz Organics Urinary tract – Best Topper

Natura Petz Organics Urinary tract helps to keep stop developing the crystals in your kitty. It can be used as a topper of the food, and all varieties are available in turkey flavor. This homeopathic medicine is formulated to help break down and eliminate all types of stones, including liver, kidney, bladder and gall stones, gravel, crystals, grains, and calculi. 

It contains antilithic, anti-inflammatory, antispasmodic, anti-bacterial, anti-fungal, anti-viral, plant steroids, and adaptogens.

Moreover, Natura Petz is formulated as a convenient powder without corn, wheat, soy, or GMO ingredients. Break It Up can permanently limit stone formation, prevent cellular irregularity in the bladder and kidneys, and normalize liver enzyme levels. 


  • Excellent for kidney stones
  • Organic 
  • Grain-free
  • non-GMO
  • Gluten-free
  • It may help in limiting the stone formation


  • Few cats refuse to it

#10. Royal Canin Feline Urinary SO Moderate Calorie Dry – Best Calorie

This dry food is designed to increase urine volume to lower urine saturation with calcium oxalate. Royal Canin Feline Urinary SO Moderate Calorie Dry formula will help your cat get rid of struvite crystals and prevent future formation.

Also, this diet will predict the crystallization potential to keep your cat healthy with relative supersaturation and RSS methodology. The formula contains chicken and grains to promote better digestion.

The food contains essential vitamins, minerals, and antioxidants to keep the bones and muscles healthy. Moreover, it boosts the immune system to help your cat fight infections. 

It is excellent in calories content which is significantly (9%) fewer than other dry food formulas, so it’s suitable for adult and senior cats, especially if they are inactive. It will help you to maintain your kitty’s weight and prevent obesity. However, this formula contains chicken by-product meals and is more pricey than other foods.


  • The formula increases the volume of urine.
  • It Can help manage struvite crystals
  • It contains healthy vitamins, minerals, and antioxidants to support the immune system to keep the body healthy
  • It can help to manage your kitty’s weight


  • More expensive than other formulas
  • Contains chicken by-products

What to Consider before buying the Low Magnesium Cat Food?

Read labels when you are choosing Which brand is suitable for your cat. “First, pet parents need to work with their veterinarian on what their cats specifically need,” says Dr. Bernal. “A veterinarian will be able to provide the key characteristics that cat parents should look for to support the health of their cat’s urinary tract.”


Domesticated cats, like humans, have their own opinion, so be sure to consider your cat’s texture preference because they might like raw or wet foods. Some may prefer soft minced food or chunky bites. Watch how your cat eats the food. Do they lick the food? Do they eat the gravy first? Their habits can give you clues about their texture preferences. Most vets recommended a mixture of wet and dry food throughout the week.


As in human food ingredient labels, ingredients are listed from most to least based on weight and include the percentages of protein, fat, fiber, and moisture. Look for foods that list the high protein content of specific meat first, and if any grains are included, whole grains are best because of the nutrients they contain.

It is also essential to watch the nutrition, moisture, and fat content of your cat’s food. Felines evolved as hunters, so their natural diet would be primarily carnivorous. They consume prey that contains high amounts of protein, moderate amounts of fat, modest amounts of carbohydrates, and Magnesium.

Note that dry foods will have a higher protein and fat content than wet foods, as wet food percentages are reported on a wet basis and contain a higher rate of water while dry food percentages are reported on a dry basis. It would help if you looked for a minimum of 8 to 10 percent protein in wet foods or at least 25 percent in dry foods. The fat content should be at least 5 percent in wet food or 20 to 30 percent in dry food. Some kitties will turn their noses up at foods with less protein or fat than recommended.

Other nutrients

Cats also need more than a dozen other nutrients, including vitamins, minerals, fatty acids, and amino acids. The required nutrients differ at each stage of life – from kittens through adolescence, during pregnancy and nursing, and as a senior cat. If your pet food is well balanced and complete for your cat’s current stage of life, they will not need any additional supplements. 


As you know, the word “organic” can be used differently, so you need to read the fine print. The U.S. Department of Agriculture (USDA) regulates the word “organic” in cat food. “Organic” refers to growing, raising, and handling a crop or animal. Organic crops should be grown on land free of pesticides for at least three years. The food should not contain toxic and persistent pesticides, artificial flavors, or colors.

When only a portion of ingredients is sourced from organic sources, you’ll also see a percentage on the label, such as “95% USDA Certified Organic.”


The Association of American Feed Control Officials (AAFCO) defines and regulates the term “natural” for pet food and animal feed. “Natural means a feed or ingredient is derived solely from plant, animal, or minced source that a chemically synthetic process has not produced. However, some ingredients can be labeled “natural” without being good or healthy for your pet.


Cats did not evolve to eat the grains we put in their pet diets. Corn, rice, barley, and wheat have all been linked to allergies and digestive problems. They also promote more alkaline urine (higher pH). Look for ingredients known as “fillers” that are low cost and have little nutritional value. They are added to keep your pet feeling full with high-quality ingredients that are low in weight. Commons are corn and wheat gluten, grain products, soy, animal by-products, and fruit and vegetable pulp.


Many cat food brands also add pre-, post-, and prebiotics that promote a healthy gut and intestinal flora. This reduces inflammation, strengthens the immune system, and helps keep their urinary tract healthy. Domesticated cats do not eat a natural diet of rodents they encounter in the wild. So pre-, post-, and probiotics are excellent options for your cat, especially if they have sensitive stomachs.

Why should your cat need low magnesium cat food? 

Giving your cat low magnesium cat food will help reduce the number of minerals in the urine. It maintains an adequate pH level in the urinary tract to prevent fluctuations in the pH level of urine that cause urinary tract infections.

Magnesium is an essential nutrient that supports your cat’s health. However, when fed in excess, Magnesium can cause cardiovascular problems, paralysis, and even death. In addition, Magnesium contributes to the formation of struvite crystals and bladder stones that can affect your cat’s health.

Q1. Can you give your cat magnesium?

Ans: However, magnesium supplements can help reverse pet constipation and urinary disorders. In addition, a magnesium-sufficient diet can help manage struvite urine crystals in cats.

Q2. What ingredients in cat food support urinary problems?

Ans: The top ingredients include pork liver, carrots, chicken, tuna, rice, spinach, chicken fat, and fish are excellent ingredients that support your kitty’s urinary problems. 

Q3. How can you feed your cat with crystals in urine?

Ans: you need to feed a small portion frequently, which will cause less fluctuation in her urine. 

Q4. Will magnesium hurt your kitty?

Ans: When you are feeding excess Magnesium in an extra amount, then it can be a negative impact on both the nervous system and heart, causing symptoms such as weakness, paralysis, and even death. 


Low magnesium cat food will help keep the urinary tract healthy by reducing the risk of FLUTD and preventing the formation of crystals and bladder stones. We chose Evanger’s EVx Restricted: Urinary Tract as our top choice because of its high protein content that supports healthy lean muscle building to keep your cat healthy.

If your cat doesn’t like this food, you can check out the other options on our list. Cats are picky eaters, but you’re sure to find a high-quality formula that your kitty will love.