Iams® Veterinary Formula™ Urinary-S Plus Low pH/S™

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Critical in helping to mange urinary health is your cat's diet. Urinary-S - Low pH/S™ can help nutritionally manage the progression of certain urinary tract health issues, with:

  • a targeted urinary pH range
  • omega-6:omega-3 fatty acid ratio targeting 5:1
  • highly refined chicken as a key protein source
  • a formula low in dietary magnesium

Iams® Veterinary Formulas can help.
We offer two specific formulas for the nutritional management of struvite-related and calcium oxalate-related crystals. The two diets nutritionally manage urine acidity (or pH). For example, there is less chance of struvite crystals forming in urine that is more acidic. So feeding your cat Iams® Veterinary Formulas Urinary-S - Low pH/S™, which delivers a more acidic urine, helps create an environment unfavorable to struvite crystal formation. On the other hand, there is less chance of calcium oxalate crystals forming in urine that is less acidic. Therefore, feeding your cat Iams® Veterinary Formulas Urinary-O - Moderate pH/O™, which delivers a less acidic urine, helps create an environment unfavorable to calcium oxalate crystal formation.


Corn Grits, Chicken Liver, Chicken By-Product Meal, Chicken, Herring Meal (source of Fish Oil), Brewer's Rice, Dried Egg Product, Chicken By-Products, Dried Beet Pulp, Chicken Fat (preserved with mixed Tocopherols, a source of Vitamin E), Calcium Chloride, Chicken Flavor, Potassium Chloride, Sodium Bisulfate, DL-Methionine, Brewer's Dried Yeast, Choline Chloride, Salt, Vitamins (Vitamin E Supplement, Niacin, Ascorbic Acid, Vitamin A Acetate, Calcium Pantothenate, Biotin, Thiamine Mononitrate [source of Vitamin B1], Pyridoxine Hydrochloride [source of Vitamin B6], Vitamin B12 Supplement, Riboflavin Supplement [source of Vitamin B2], Inositol, Vitamin D3 Supplement, Folic Acid), Minerals (Zinc Oxide, Manganese Sulfate, Copper Sulfate, Potassium Iodide, Cobalt Carbonate), Calcium Carbonate, Rosemary Extract

Nutrient (percent)
Crude Protein, minimum 32.0
Crude Fat, minimum 15.5
Crude Fiber, maximum 2.5
Moisture, maximum 10.0
Ash, maximum 7.2
Magnesium, maximum 0.1
Taurine, minimum 0.15
Omega-6 Fatty Acids, minimum 1.4*
Omega-3 Fatty Acids, minimum 0.28*

*Not recognized as an essential nutrient by the AAFCO Cat Food Nutrient Profiles. Low pH/S/Feline Dry Formula is formulated to meet the nutritional levels established by the AAFCO Cat Food Nutrient Profiles for Maintenance. Manufactured under U.S. Patent Nos. 5,616,569 and 6,093,418; other U.S. and foreign patents pending.

Weight (lbs) Weight maintenance (dry cups per day)
4 1/4 to 1/3
8 1/2 to 2/3
12 2/3 to 1
16 1 to 1 1/3
22 1 1/4 to 1 3/4

Dry/canned mix: for every ½ cup of dry food you can substitute 1 can.

These guideline amounts are a starting point and your cat may need more food depending upon age, activity and temperament. In order to reach optimal body condition, you may need to adjust food intake. This chart represents the total recommended volume of food per day. You should divide the total recommended feeding amount by the number of times you feed your cat per day to get the actual portion size per feeding.

3,769 kcal/kg; 386 kcal/cup; 3.61-oz/cup