Milk Replacer for Kittens with Colostrum Supplement
Verified Jun 10, 2026
This is a high-protein, high-fat powdered milk replacer designed to mimic queen’s milk for kittens, using dairy-based proteins, added taurine, and essential vitamins and minerals. It includes bovine colostrum for additional immune support and can be used for orphaned or nursing-challenged kittens, as well as an extra-calorie supplement for pregnant, lactating, or adult cats. The calorie-dense formula is mixed with warm water before feeding or can be added to food for extra nutritional support.
Nutritionally, this is a well-designed kitten milk replacer with appropriate high protein and fat levels and a full vitamin–mineral and taurine profile to support growth. The use of digestible dairy proteins plus added bovine colostrum makes it suitable for most bottle-raised kittens and for supplementing pregnant or lactating queens. As with any dairy-based replacer, a few very sensitive cats may not tolerate it perfectly, but for most kittens this is a strong, balanced option when mother’s milk is unavailable or insufficient.
The KibbleLab Score (1–10) is assessed from publicly available product data. Our evaluation is science-based, not marketing-based.
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At a Glance
KibbleLab Review
Strengths
- High protein (33%) and high fat (40%) levels closely match the needs of growing kittens and provide dense calories in small volumes, which is important for tiny stomachs.
- Contains taurine, methionine, lysine, and a complete vitamin–mineral mix, supporting heart, eye, skeletal, and overall development.
- Includes dried bovine colostrum, which offers antibodies and bioactive components that can help support developing immune systems.
- Uses dairy-based proteins (whey, caseinate, skimmed milk) that are generally very digestible for kittens, with low fiber and moisture appropriate for a powdered formula.
Considerations
- Formulated with multiple dairy ingredients, which is expected in kitten milks but may cause soft stools in a minority of very sensitive kittens or adult cats.
- Uses generic "animal fat" rather than specifying the animal source, which is acceptable nutritionally but not ideal for cats with known fat-source allergies.
- This is a supplement/milk replacer, not a stand-alone long-term diet for older kittens or adults; once kittens are able, they should transition to a complete and balanced kitten food as their main nutrition.
Full Ingredient List
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
Animal Fat
Animal fat is used in pet foods as a concentrated energy source and palatability enhancer, and can provide fat-soluble vitamin absorption and essential fatty acids (including arachidonic and linoleic acids, depending on the source) that support skin, coat and overall cellular function—particularly important for obligate carnivores like cats. Because it is calorie-dense and prone to oxidation, fats are typically rendered and stabilized; owners should be aware that high-fat diets can contribute to obesity and may trigger pancreatitis in susceptible dogs, so quality, source, and total dietary fat should be considered.
02
Vegetable Fat
Vegetable fat is used in pet foods as a concentrated energy source and to improve palatability, texture and the absorption of fat‑soluble vitamins, often supplying linoleic (omega‑6) fatty acids. While dogs and cats benefit from the energy and omega‑6s provided, vegetable fats do not supply arachidonic acid (an essential fatty acid for cats), are calorie‑dense and can contribute to weight gain if overused, may oxidize unless stabilized with antioxidants, and certain sources or processing methods (e.g., hydrogenation or specific plant oils like soybean) can raise quality or sensitivity concerns.
03
Mixed Tocopherol
Mixed tocopherols are a blend of natural vitamin E compounds (alpha, beta, gamma and delta tocopherols) used in pet foods primarily as a natural antioxidant and preservative to protect fats and fat‑soluble nutrients and extend shelf life. They also supply dietary vitamin E—an essential antioxidant for immune function, skin and coat health and cellular integrity in dogs and cats—and are generally safe at typical use levels, though they are not a substitute for a complete vitamin formulation and may be less effective in animals with fat‑absorption disorders.
04
Rosemary Extract
Rosemary extract is used in pet foods primarily as a natural antioxidant and preservative to protect fats and oils from oxidation and help extend shelf life, sometimes adding a mild flavor. It does not provide essential nutrients but supplies polyphenolic antioxidants (e.g., carnosic and rosmarinic acids) and is generally safe at food‑grade levels; concentrated rosemary oils can cause gastrointestinal or skin/respiratory irritation and may be of greater concern for sensitive animals (particularly cats), so products should use properly formulated amounts.
05
Whey Protein Concentrate
Whey protein concentrate is a dairy-derived concentrated protein commonly added to pet foods and treats to increase highly digestible, complete protein and essential amino acids that support muscle maintenance, growth, and recovery in dogs and cats while often improving palatability. Because it contains lactose and milk proteins, it may cause digestive upset or allergic reactions in pets with dairy intolerance or sensitivity and should be used cautiously in animals with certain medical conditions (e.g., advanced kidney disease); consult your veterinarian if concerned.
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.What is calorie density
How many calories the food packs per unit. Denser foods mean smaller portions for the same calories.Product Details & Brand
Product Specs
Brand
Under the Weather Pet is a pet food and supplement brand offering freeze-dried bland diets, broth toppers, and wellness chews for dogs and cats. The brand targets health-conscious pet owners seeking convenient, vet-formulated solutions for digestive upset and recovery support.
Visit Under the Weather PetManufacturer
All Under the Weather products are manufactured in the United States in facilities that follow FDA and USDA guidelines. The company emphasizes quality control, sourcing premium human-grade ingredients, and producing small batches to ensure safety and nutritional integrity.
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
Under the Weather Pet Milk Replacer for Kittens with Colostrum Supplement has no recalls since 2014.
Source: FDA Pet Food Recall Database · Monitored daily
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Frequently Asked Questions
Has Under the Weather Pet ever been recalled?
We have no recalls on record for Under the Weather Pet. We monitor the FDA Pet Food Recall Database daily.
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.
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 database. Last verified dates reflect our most recent data check.
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