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2025 Canada Guide: Top 5 Pregnancy and Lactation Supplements for Breeding Cats — Revival Animal Health Breeder's Edge Oxy Mate, PetAg KMR, Tomlyn Nutri-Cal, Pet Wellbeing Milk Thistle, NaturVet Brewer's Dried Yeast

Published on Wednesday, August 20, 2025

Nutrient-dense supplements for pregnant and nursing breeding cats are formulated to meet the higher energy, protein and micronutrient demands of gestation and lactation. This category focuses on balanced prenatal vitamins and minerals, calcium and phosphorus support for safe milk production, omega fatty acids for neonatal brain and eye development, and high-quality protein or caloric supplements to maintain breeder body condition. Canadian buyers prioritize veterinary endorsement, clear ingredient lists, ease of administration, palatability for finicky cats, and availability from domestic suppliers or reputable importers. These products appeal to professional breeders and dedicated pet owners who need reliable, research-aligned nutrition to protect maternal health and support robust kitten growth while complying with Canadian regulations and supply chains.

Quick Menu

1. Best Neonatal Oxygen Support

2. Best Complete Milk Replacer

3. Best Calorie-Dense Energy Gel

4. Best Liver Support

5. Best Palatability & B-Vitamin Support

1
BEST NEONATAL OXYGEN SUPPORT

Revival Animal Health Breeder's Edge Oxy Mate

Revival Animal Health

Revival Animal Health's Breeder's Edge Oxy Mate is positioned as a breeder-oriented prenatal and lactation support concentrate, formulated to provide a compact blend of vitamins and minerals tailored for high-volume breeding operations. It distinguishes itself from retail single-purpose products by offering breeder-friendly dosing and packaging that can lower cost-per-dose, and it pairs as a complementary maternal support to primary nutrition products like PetAg KMR and Tomlyn Nutri-Cal.

4.1
★★★★☆

  • Boosts oxygen

  • Neonate rescuer

  • Boosts oxygen

  • Neonate rescuer

Review Summary

82%

"Users generally report improved energy and recovery in breeding cats and kittens when used as directed, with many breeders appreciating the formulation; a minority find little noticeable benefit and some cite cost and availability as drawbacks."

  • Syringe-ready lifesaver

  • Supports oxygenation and quick energy in stressed or newborn kittens to aid immediate neonatal recovery

  • Syringe-ready lifesaver

  • Supports oxygenation and quick energy in stressed or newborn kittens to aid immediate neonatal recovery

Increased Safety & Security

Revival Animal Health's Breeder's Edge Oxy Mate is positioned as a breeder-oriented prenatal and lactation support concentrate, formulated to provide a compact blend of vitamins and minerals tailored for high-volume breeding operations. It distinguishes itself from retail single-purpose products by offering breeder-friendly dosing and packaging that can lower cost-per-dose, and it pairs as a complementary maternal support to primary nutrition products like PetAg KMR and Tomlyn Nutri-Cal.

  • Boosts oxygen

  • Neonate rescuer

  • Syringe-ready lifesaver

  • Supports oxygenation and quick energy in stressed or newborn kittens to aid immediate neonatal recovery

  • Formulated for rapid, small-volume dosing during birthing and early life emergencies

  • Boosts oxygen

  • Neonate rescuer

  • Syringe-ready lifesaver

  • Supports oxygenation and quick energy in stressed or newborn kittens to aid immediate neonatal recovery

  • Formulated for rapid, small-volume dosing during birthing and early life emergencies

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$25-40 CAD

2
BEST COMPLETE MILK REPLACER

PetAg KMR Kitten Milk Replacer Powder

Pet Ag

PetAg KMR Kitten Milk Replacer Powder is the market-leading complete milk replacer recommended for orphaned or supplementally-fed neonates, delivering balanced nutrition to replace maternal milk when needed. Technically it serves a different and essential role than calorie gels or herbal additives — providing full nutritional intake rather than a boost — and its large-format powders offer strong cost-efficiency when used as the primary feeding solution for litters.

4.7
★★★★☆

  • Mother-like formula

  • Easy to mix

  • Mother-like formula

  • Easy to mix

Review Summary

93%

"Widely recommended as the go-to milk replacer for orphaned and supplemental-fed kittens; reviewers praise digestibility and consistent kitten weight gain, with occasional notes about mixing consistency and preference for ready-to-use forms."

  • Growth fuel — kitten candy

  • Formulated to mimic queen's milk with balanced protein and fat for growth and development

  • Growth fuel — kitten candy

  • Formulated to mimic queen's milk with balanced protein and fat for growth and development

Time-Saving Convenience

Increased Safety & Security

PetAg KMR Kitten Milk Replacer Powder is the market-leading complete milk replacer recommended for orphaned or supplementally-fed neonates, delivering balanced nutrition to replace maternal milk when needed. Technically it serves a different and essential role than calorie gels or herbal additives — providing full nutritional intake rather than a boost — and its large-format powders offer strong cost-efficiency when used as the primary feeding solution for litters.

  • Mother-like formula

  • Easy to mix

  • Growth fuel — kitten candy

  • Formulated to mimic queen's milk with balanced protein and fat for growth and development

  • Provides essential vitamins, minerals and electrolytes tailored for kittens

  • Mother-like formula

  • Easy to mix

  • Growth fuel — kitten candy

  • Formulated to mimic queen's milk with balanced protein and fat for growth and development

  • Provides essential vitamins, minerals and electrolytes tailored for kittens

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From 125.99$
3
BEST CALORIE-DENSE ENERGY GEL

Tomlyn Nutri-Cal High Calorie Nutritional Gel

Tom Lyn

Tomlyn Nutri-Cal High Calorie Nutritional Gel is a concentrated energy supplement designed for quick caloric support of lactating queens and weak or anorexic kittens, making it technically advantageous when small, frequent doses are required. Financially it is often more economical for short-term energy supplementation than using volumetric milk replacers for the same calorie delivery, though it is best used alongside complete feeds like KMR rather than as a standalone diet.

4.5
★★★★☆

  • Quick calories

  • Palatable gel

  • Quick calories

  • Palatable gel

Review Summary

89%

"Commonly used to boost calories for nursing and underweight cats; users praise appetite stimulation and easy dosing, though some find it messy to apply and note effects can be temporary without addressing underlying issues."

  • Lickable boost

  • Concentrated, high-calorie paste to support weight gain and extra energy needs during lactation or illness

  • Lickable boost

  • Concentrated, high-calorie paste to support weight gain and extra energy needs during lactation or illness

Increased Safety & Security

Time-Saving Convenience

Tomlyn Nutri-Cal High Calorie Nutritional Gel is a concentrated energy supplement designed for quick caloric support of lactating queens and weak or anorexic kittens, making it technically advantageous when small, frequent doses are required. Financially it is often more economical for short-term energy supplementation than using volumetric milk replacers for the same calorie delivery, though it is best used alongside complete feeds like KMR rather than as a standalone diet.

  • Quick calories

  • Palatable gel

  • Lickable boost

  • Concentrated, high-calorie paste to support weight gain and extra energy needs during lactation or illness

  • Highly palatable and easy to syringe or hand-feed to picky, weak or nursing cats

  • Quick calories

  • Palatable gel

  • Lickable boost

  • Concentrated, high-calorie paste to support weight gain and extra energy needs during lactation or illness

  • Highly palatable and easy to syringe or hand-feed to picky, weak or nursing cats

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From 31.10$
4
BEST LIVER SUPPORT

Pet Wellbeing Milk Thistle for Cats

Pet Wellbeing

Pet Wellbeing Milk Thistle for Cats provides targeted herbal liver support intended to help protect hepatic function in breeding queens, a useful technical adjunct when mothers are stressed or exposed to medications. It does not replace caloric or milk needs but fills a complementary role to products such as KMR and Nutri-Cal; as a specialty herbal supplement it can be cost-effective for breeders looking to mitigate liver-related risks without switching core feeding protocols.

4.2
★★★★☆

  • Liver support

  • Gentle detox

  • Liver support

  • Gentle detox

Review Summary

80%

"Many owners report gentle, supportive effects on liver health and recovery using milk thistle, with good tolerability; several reviewers note results are gradual and a minority observe minimal change."

  • Milk-safe herb

  • Contains standardized milk thistle (silymarin) to support liver antioxidant and metabolic pathways

  • Milk-safe herb

  • Contains standardized milk thistle (silymarin) to support liver antioxidant and metabolic pathways

Increased Safety & Security

Self-Improvement & Personal Growth

Pet Wellbeing Milk Thistle for Cats provides targeted herbal liver support intended to help protect hepatic function in breeding queens, a useful technical adjunct when mothers are stressed or exposed to medications. It does not replace caloric or milk needs but fills a complementary role to products such as KMR and Nutri-Cal; as a specialty herbal supplement it can be cost-effective for breeders looking to mitigate liver-related risks without switching core feeding protocols.

  • Liver support

  • Gentle detox

  • Milk-safe herb

  • Contains standardized milk thistle (silymarin) to support liver antioxidant and metabolic pathways

  • Formulated with cat-appropriate dosing for ongoing hepatic support when recommended by a veterinarian

  • Liver support

  • Gentle detox

  • Milk-safe herb

  • Contains standardized milk thistle (silymarin) to support liver antioxidant and metabolic pathways

  • Formulated with cat-appropriate dosing for ongoing hepatic support when recommended by a veterinarian

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From 81.97$
5
BEST PALATABILITY & B-VITAMIN SUPPORT

NaturVet Brewer's Dried Yeast Formula with Garlic

NaturVet

NaturVet Brewer's Dried Yeast Formula with Garlic is a palatability- and B-vitamin–focused supplement that aims to support appetite, coat condition, and general resilience in breeding cats and kittens. It stands out as an inexpensive, broad-purpose additive that can improve voluntary intake alongside primary nutrition options (like PetAg KMR) and is a budget-friendly choice for breeders seeking mild immune and digestive support without the higher per-dose cost of some concentrated therapeutic gels.

3.9
★★★☆☆

  • B-vitamin boost

  • Immune support

  • B-vitamin boost

  • Immune support

Review Summary

76%

"Some users report improved coat condition and appetite with this brewer's yeast formula, but reviews are mixed—a number of buyers see little benefit and a few express concern about garlic in feline supplements."

  • Crunchy treat

  • Brewer's dried yeast provides B-vitamins to support skin, coat and metabolic health

  • Crunchy treat

  • Brewer's dried yeast provides B-vitamins to support skin, coat and metabolic health

Recreational Enjoyment

Increased Safety & Security

NaturVet Brewer's Dried Yeast Formula with Garlic is a palatability- and B-vitamin–focused supplement that aims to support appetite, coat condition, and general resilience in breeding cats and kittens. It stands out as an inexpensive, broad-purpose additive that can improve voluntary intake alongside primary nutrition options (like PetAg KMR) and is a budget-friendly choice for breeders seeking mild immune and digestive support without the higher per-dose cost of some concentrated therapeutic gels.

  • B-vitamin boost

  • Immune support

  • Crunchy treat

  • Brewer's dried yeast provides B-vitamins to support skin, coat and metabolic health

  • Includes garlic for added palatability—veterinary consultation recommended for pregnant or nursing cats

  • B-vitamin boost

  • Immune support

  • Crunchy treat

  • Brewer's dried yeast provides B-vitamins to support skin, coat and metabolic health

  • Includes garlic for added palatability—veterinary consultation recommended for pregnant or nursing cats

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From 37.33$

What the Research and Veterinary Guidance Say

Scientific literature and veterinary nutrition guidance emphasize that pregnant and lactating cats require increases in caloric intake, protein, essential fatty acids and select minerals and vitamins. Proper supplementation can reduce maternal weight loss, support adequate milk yield and improve kitten survival and development. While high-quality commercial diets designed for reproduction are primary, targeted supplements fill gaps for breeders managing large litters, poor maternal intake, or medical issues. Evidence supports milk replacers for orphaned kittens, caloric gels for short-term energy support, and specific nutrients such as omega-3 long-chain fatty acids and balanced calcium sources for neonatal development and safe lactation.

Energy and protein: Veterinary sources recommend increasing daily energy by up to 25 to 50 percent during late pregnancy and lactation to prevent maternal cat weight loss and support milk production.

Calcium and phosphorus: Balanced supplementation is critical. Rapid calcium supplementation without veterinary oversight can cause metabolic imbalances; products formulated for breeders help maintain safe ratios.

Omega-3 fatty acids: Docosahexaenoic acid (DHA) contributes to neonatal neural and retinal development; supplementation to the nursing queen benefits kitten growth when provided at recommended levels.

Milk replacers: Commercial kitten milk replacers like PetAg KMR are formulated to match the macro and micronutrient profile of queen's milk and are supported by practical studies and widespread veterinary use for orphan or supplemental feeding.

Support supplements: High-calorie gels such as Tomlyn Nutri-Cal provide immediate energy for underweight queens, while brewer's yeast and targeted herbal products can support appetite and digestion, though herbal options should be used with veterinary guidance.

In Canada the five featured products provide complementary approaches to reproductive support: Revival Animal Health Breeder's Edge Oxy Mate offers a broad-spectrum prenatal formula that makes it the best all-around choice for breeding cats needing balanced prenatal and lactation support; PetAg KMR Kitten Milk Replacer Powder is the trusted option for orphaned or supplemental-fed kittens; Tomlyn Nutri-Cal High Calorie Nutritional Gel is a convenient fast-acting energy source for queens that need immediate caloric support; Pet Wellbeing Milk Thistle for Cats can be considered for liver support under veterinary direction; and NaturVet Brewer's Dried Yeast Formula with Garlic helps with appetite and B vitamin support. We hope you found what you were looking for; use the site search to refine by ingredient, veterinary approval, form factor or seller, or expand your search to compare dosing, pricing and Canadian availability.

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