Cataplex® A-C for Dogs by Standard Process: Immune, Skin, and Cellular Support Guide
When I am supporting a dog’s immune system, skin, and overall resilience, I often look first at foundational nutrition. Cataplex® A-C by Standard Process is one of those foundational supplements I reach for when a dog needs gentle, whole food-based immune and tissue support.
This formula combines vitamins A and C with organic echinacea and glandular ingredients. The goal is not to stimulate the immune system aggressively, but to support normal immune response, healthy cells, and strong tissues throughout the body.

What Is Cataplex® A-C?
Cataplex® A-C is a whole food-based supplement designed to support immune system function, skin integrity, mucous membranes, and healthy cells. It also supports the hematopoietic system, which is the body’s process of making blood cells and plasma.
This formula brings together key ingredients from Cataplex® A and Cataplex® C, along with organic echinacea. The result is a balanced blend that supports immune response while nourishing tissues that are often stressed during illness, recovery, or chronic inflammation.
Standard Process developed this product using their long-standing whole food philosophy. Instead of relying only on isolated nutrients, the formula includes vitamins within a broader food matrix to support absorption and biological balance.
How Cataplex® A-C Supports Dogs
I think of Cataplex® A-C as a support formula for dogs that need immune resilience and tissue repair, not as a quick fix.
Immune System Support
Vitamins A and C act as antioxidants, which help protect cells from oxidative stress. Echinacea supports a healthy immune response function, especially during times of stress or seasonal challenges.
Skin and Mucous Membrane Health
Vitamin A plays an essential role in maintaining healthy epithelial tissue. This includes the skin, respiratory lining, digestive lining, and other protective barriers in the body.
Cellular and Tissue Support
This formula helps maintain healthy cells and connective tissues. That is important for healing, immune communication, and long-term resilience.
Eye Health
Vitamin A is essential for normal vision and eye tissue health, particularly in low-light conditions.
Blood and Plasma Support
Cataplex® A-C supports the hematopoietic system, which helps the body create healthy blood cells and plasma.

Key Nutrients and Why They Matter
Each serving, which is two tablets, provides targeted nutrition from whole food sources.
Vitamins Per Serving
Vitamin A: 450 mcg RAE
Vitamin C: 11 mg
Vitamin A supports immune function, skin integrity, vision, and epithelial tissues. Vitamin C supports immune response and helps protect cells from oxidative damage.
Proprietary Whole Food Blend
The proprietary blend provides 490 mg per serving and includes:
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Calcium lactate
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Organic carrot and organic sweet potato
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Bovine adrenal and bovine kidney
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Echinacea angustifolia root and echinacea purpurea root
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Nutritional yeast
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Magnesium citrate
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Organic alfalfa and organic buckwheat
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Organic reishi and shiitake mushroom powders
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Veal bone and bovine bone
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Defatted wheat germ and organic oat flour
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Sunflower lecithin
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Vitamin E from sunflower
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Rice bran
Other ingredients include honey, ascorbic acid, organic acacia fiber, calcium stearate, and vitamin A palmitate.
These ingredients work together to support immune balance, tissue health, and nutrient absorption.

When I Commonly Use Cataplex® A-C
In practice, I often consider this formula for dogs that:
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Need immune system support during seasonal challenges
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Have dry, irritated, or sensitive skin
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Are recovering from illness or stress
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Need support for mucous membranes and connective tissue
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Benefit from antioxidant support
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Need gentle adrenal and glandular nourishment
This is not a stimulant. It is a supportive, nourishing formula that fits well into long-term wellness plans.
Dosage and How to Give It
General dosing guidelines are based on size. These are starting points and may be adjusted based on individual needs.
Small dogs under 20 pounds: 2 tablets daily
Medium dogs 20 to 50 pounds: 4 tablets daily
Large dogs over 50 pounds: 6 tablets daily
Tablets can be given with food. They may be crushed and mixed into meals if needed. I recommend starting low and increasing gradually.

Safety Notes and Precautions
Most dogs tolerate Cataplex® A-C very well.
Some dogs may experience mild digestive upset when starting any new supplement. Starting with a lower dose helps minimize this.
Do not use this product if your dog has a known allergy to plants in the daisy family, as echinacea is included.
This product contains wheat.
Always store supplements out of reach of pets and children.
Frequently Asked Questions
What is Cataplex® A-C used for in dogs?
Cataplex® A-C is used to support immune function, skin health, mucous membranes, healthy cells, and normal blood and plasma production.
Does Cataplex® A-C stimulate the immune system?
No. It supports normal immune response rather than overstimulating immune activity.
Can Cataplex® A-C help with skin issues?
Yes. Vitamin A and whole food nutrients help maintain healthy skin and epithelial tissues.
Is this supplement safe for long-term use?
For most dogs, yes. It is designed as a nutritional support formula and is often used as part of ongoing wellness care.
Should I talk to my veterinarian before using this supplement?
Yes. I always recommend discussing new supplements with your veterinarian, especially if your dog has medical conditions or is on medication.
