Standard Process Feline Immune System Support Supplement Facts

Name: Feline Immune System Support
Brand: Standard Process

Standard Process Feline Immune System Support is a cat immune and allergy supplement in powder form.

Supplement facts

Proprietary Blend 265 mg** Eleuthero ( _Eleutherococcus senticosus_), bovine liver, L-glutamine, porcine jejunum, bovine orchic Cytosol™ extract, bovine thymus Cytosol™ extract, amla extract, ribonucleic acid, bovine spleen PMG™ extract, bovine pituitary PMG™ extract, bovine adrenal Cytosol™ extract, organic pea vine juice powder, bovine spleen, ovine spleen, organic buckwheat (aerial parts) juice powder, organic buckwheat flour, bovine kidney, organic oat flour, organic alfalfa (aerial parts) juice powder, copper amino acid (rice) chelate, iron amino acid (rice) chelate, zinc amino acid (rice) chelate, kelp, and bovine pancreas PMG™ extract. **Other Ingredients:** Calcium stearate and honey

Values above are transcribed from the product label exactly as printed. Supplements are not reviewed or approved by the FDA to treat, cure, or prevent disease, and independent testing shows label accuracy varies between brands. Always check with your veterinarian before starting a supplement.

Cautions

Safe use in pregnant animals or animals intended for breeding has not been proven. If animal’s condition worsens or does not improve, stop product administration and consult your veterinarian. ![Feline Immune System Support, 90 Tablets, Rev 04 Supplement Facts Supplement Facts](https://standardprocesscom.corewebdna.com/files/images/products/product-description/A5305/A5305-Feline-Immune-System-Support-Supplement-Facts-Label.webp?f=png) Nutrients & Ingredients **Amount per 1 Tablet (350 mg):** **Proprietary Blend 265 mg** Eleuthero ( _Eleutherococcus senticosus_), bovine liver, L-glutamine, porcine jejunum, bovine orchic Cytosol™ extract, bovine thymus Cytosol™ extract, amla extract, ribonucleic acid, bovine spleen PMG™ extract, bovine pituitary PMG™ extract, bovine adrenal Cytosol™ extract, organic pea vine juice powder, bovine spleen, ovine spleen, organic buckwheat (aerial parts) juice powder, organic buckwheat flour, bovine kidney, organic oat flour, organic alfalfa (aerial parts) juice powder, copper amino acid (rice) chelate, iron amino acid (rice) chelate, zinc amino acid (rice) chelate, kelp...

Ingredients

Inactive ingredients

Eleuthero ( _Eleutherococcus senticosus_), bovine liver, L-glutamine, porcine jejunum, bovine orchic Cytosol™ extract, bovine thymus Cytosol™ extract, amla extract, ribonucleic acid, bovine spleen PMG™ extract, bovine pituitary PMG™ extract, bovine adrenal Cytosol™ extract, organic pea vine juice powder, bovine spleen, ovine spleen, organic buckwheat (aerial parts) juice powder, organic buckwheat flour, bovine kidney, organic oat flour, organic alfalfa (aerial parts) juice powder, copper amino acid (rice) chelate, iron amino acid (rice) chelate, zinc amino acid (rice) chelate, kelp, and bovine pancreas PMG™ extract. **Other Ingredients:** Calcium stearate and honey

Frequently asked questions

What is Standard Process Feline Immune System Support for?

Standard Process Feline Immune System Support is formulated as a immune and allergy supplement for cats.

About this data

Data sources: Standardprocess.

Data was compiled manually and may be out of date.

Data last updated July 11, 2026.

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About this data

We gather factual supplement details from public manufacturer and retailer listings and product labels. Values are shown exactly as printed on each label. Supplements are not reviewed or approved by the FDA to treat, cure, or prevent disease, and label accuracy varies by brand. Nothing here is veterinary advice, and no product listed here is endorsed. Always check with your veterinarian before starting a supplement. Product names and trademarks belong to their respective owners.

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