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Pet food supplement
PetAg

Cat-Sip Real Milk Supplement

Verified Jul 29, 2026

Cat · Supplement Kitten Adult All Breed Sizes

This is a low-fat, lactose-reduced milk snack for cats and kittens over 8 weeks of age. It’s made from Grade A low-fat milk with added taurine, offering a tasty, hydrating treat rather than a full meal. The very high moisture and modest calorie content make it more of a supplemental beverage than a significant source of nutrition.

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Over-the-counter No recalls

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Official product page
KibbleLab Score
9.3 out of 10

Top Pick

Nutritionally, this is a simple, straightforward milk-based supplement designed as an occasional treat or topper for cats and kittens, not as their main diet. The low lactose level makes it easier to digest than regular cow’s milk, and the added taurine is important for cats, though primary taurine needs should still be met through a complete cat food. It can work well for cats that enjoy milk-like treats, as long as it’s used in moderation alongside a balanced diet.

Actives and dosage disclosure 10.0
Ingredient composition 8.0
Health considerations 10.0

Computed from 3 of 3 applicable checks. Missing data is skipped, never counted against a food.

The KibbleLab Score (1–10) is assessed from publicly available product data. Our evaluation is science-based, not marketing-based.

Nutritional profile Protein, fat, fiber on a dry-matter basis, for the stated life stage and format
Adequacy substantiation Complete and balanced substantiation; feeding trials valued higher
Ingredient composition Screened for unnamed sources, artificial additives, and label protein inflation. Not a quality ranking.
Health considerations Pulse-heavy grain-free (DCM) pattern and recall history
Verified manufacturer evidence A small bonus when we can verify evidence addressing WSAVA selection criteria
9.0 - 10 Top Pick
8.0 - 8.9 Strong Choice
7.0 - 7.9 Solid Option
6.0 - 6.9 Worth a Conversation
Below 6.0 Review Carefully

KibbleLab may earn an affiliate commission when you buy through a link. No one can pay for a higher score, or to change what we recommend for your pet.


At a Glance

Marketed Benefits
Where these benefits come from Benefits the manufacturer highlights in its own product marketing. KibbleLab lists them for reference and does not verify these claims.
Digestive Health Hydration Support Eye Health Heart Care Low Fat
Suitable For
Kitten Adult All Breed Sizes
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Nutritional Perspective

KibbleLab Review

Strengths

  • Low-fat, 99% lactose-free milk is generally easier for cats to digest than regular cow’s milk, reducing the risk of diarrhea in sensitive cats.
  • Very high moisture content (about 91%) can contribute a bit to overall hydration, which can be helpful for cats that tend not to drink much water.
  • Includes taurine, an essential amino acid for cats, which supports what they’re already getting from a complete cat food.
  • Clear labeling that this is for intermittent or supplemental feeding only, helping owners understand it should not replace a balanced diet.

Considerations

  • This product is not complete and balanced, so it must always be fed alongside a proper commercial cat food; it should not be used as a meal replacement.
  • Despite being lactose-reduced, it still contains some lactose, so a few very sensitive cats may still develop soft stool or digestive upset.
  • Protein and fat levels are quite low, so it contributes relatively little to the cat’s overall nutrient intake and should be viewed as a treat rather than meaningful nutrition.
  • Because it is milk-based, it may not be appropriate for cats with known dairy allergies or adverse food reactions to milk proteins.
Scored using the rubric of an NAVC Certified Pet Nutrition Coach (PNCC). This is informational, not veterinary advice.

Full Ingredient List

Lowfat milk, liquid Kluyveromyces marxianis var. lactis fermentation product, taurine.

Ingredients and analysis reflect manufacturer data at the time of our last update and can change without notice. Always check the actual product packaging before feeding.

Ingredient filtering helps identify compatible options but is not a substitute for a veterinary elimination diet.

Top 5 Ingredients Explained

01
Milk
Milk is used in pet foods and treats as a source of animal protein, fat, lactose (carbohydrate), calcium and flavor, commonly appearing in dairy-based treats, wet formulas or as a processing ingredient. While it provides calcium and energy, many adult dogs and especially cats are lactose intolerant or may have milk-protein allergies so milk can cause diarrhea or vomiting, add extra calories and fat, and raw milk carries pathogen risks—commercial products are typically pasteurized and balanced to limit these issues.
View ingredient
02
Kluyveromyces Marxianus Var. Lactis Fermentation Product
Kluyveromyces marxianus var. lactis fermentation product is a yeast‑derived ingredient produced under controlled fermentation and used in pet foods for flavor/palatability, as a source of yeast components (such as B vitamins, nucleotides, beta‑glucans and mannans) and as a functional postbiotic/prebiotic-like additive rather than as a live probiotic. It can help support digestive health, immune function and micronutrient supply for dogs and cats, but it is not a complete protein source, should be included at formulation-appropriate levels, and animals with rare yeast sensitivities should be monitored; choose products from reputable manufacturers to ensure safety and quality.
03
Taurine
Taurine is an amino sulfonic acid added to pet foods to support essential functions such as heart muscle performance, retinal health, and reproduction, and is particularly critical for cats, which cannot synthesize enough on their own. Adequate taurine prevents conditions like dilated cardiomyopathy and vision degeneration—dogs generally make more taurine but certain breeds or homemade/vegetarian diets may require supplementation—so commercial diets should meet species-specific levels and homemade plans should be carefully supplemented.

Nutritional Breakdown

How to read As Fed versus Dry Matter As fed shows the numbers straight off the label, water included. Dry matter removes the water so you can compare a wet food and a dry food fairly.
As Fed
Crude Protein (min)
2.50%
Low High
Crude Fat (min)
1.00%
Low High
Crude Fiber (max)
0.25%
Low High
Moisture (max)
91.00%
Low High
376
kcal / Kg
11
kcal / Oz
Low
Calorie density category
What is calorie density How many calories the food packs per unit. Denser foods mean smaller portions for the same calories.

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Product Details & Brand

Product Specs

Lifestage Kitten
Lifestage Adult
Breed size All Breed Sizes
Texture Liquid
Food type Supplement

Brand

The PetAg brand encompasses the company’s broader range of nutritional supplements, milk replacers, and specialty diets for dogs, cats, small mammals, and exotic pets. It emphasizes clinically supported nutrition backed by decades of animal care expertise.

Price tier $$$

Manufacturer

Company name PetAg, Inc.
Parent company PBI-Gordon Corporation
Founded 1930
Headquarters Hampshire, Illinois, USA
Manufacturing type In House
Manufacturing country United States
Manufacturing region Illinois
Manufacturing oversight

PetAg maintains extensive quality control programs for its pet nutrition products, adhering to regulatory standards for pet food and supplements in the United States. Their facilities operate under FDA and AAFCO guidelines for animal feed safety and quality.

Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.

Recall History

No recalls on record

No recall is listed for PetAg Cat-Sip Real Milk Supplement.

Source: FDA animal food recall listings back to January 2019 · Checked daily, last on Aug 31, 2026

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9.3 /10 Grade A+
Cat-Sip Real Milk Supplement
PetAg · kibblelab.com

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Frequently Asked Questions

Has PetAg ever been recalled?

We have no recalls on record for PetAg. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.

How does KibbleLab rate foods?

Our scores are based on ingredient composition, nutritional profile, AAFCO compliance, and health considerations. We don't penalize by-products, grains, or synthetic preservatives. Brands cannot pay for higher scores.

Is KibbleLab a substitute for veterinary advice?

No. KibbleLab provides data-driven food analysis, not medical advice. Always consult your veterinarian before making dietary changes, especially for pets with health conditions.

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KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.

KibbleLab may earn affiliate commissions through product links. No one can pay for a higher score, or to change what we recommend for your pet.

Product data sourced from manufacturer websites, AAFCO statements, and FDA recall listings. Last verified dates reflect our most recent data check. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.