---
product_id: 49872293
title: "Dr. Bill’s Feline Immune Support | Boosts Cat Immunity and Health with Colostrum, Beta Glucan, Turkey Tail Mushroom, Zinc & Vitamin C | Powder Supplement for Cats of All Ages"
brand: "dr. bill's"
price: "¥6366"
currency: JPY
in_stock: true
reviews_count: 8
category: "Dr. Bill's"
url: https://www.desertcart.jp/products/49872293-dr-bill-s-feline-immune-support-boosts-cat-immunity-health
store_origin: JP
region: Japan
---

# Turkey Tail mushroom power 60g premium powder formula Clinically studied immune boosters Dr. Bill’s Feline Immune Support | Boosts Cat Immunity and Health with Colostrum, Beta Glucan, Turkey Tail Mushroom, Zinc & Vitamin C | Powder Supplement for Cats of All Ages

**Brand:** dr. bill's
**Price:** ¥6366
**Availability:** ✅ In Stock

## Summary

> 🐾 Elevate your cat’s health game — immunity that keeps up with their nine lives!

## Quick Answers

- **What is this?** Dr. Bill’s Feline Immune Support | Boosts Cat Immunity and Health with Colostrum, Beta Glucan, Turkey Tail Mushroom, Zinc & Vitamin C | Powder Supplement for Cats of All Ages by dr. bill's
- **How much does it cost?** ¥6366 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/49872293-dr-bill-s-feline-immune-support-boosts-cat-immunity-health)

## Best For

- dr. bill's enthusiasts

## Why This Product

- Trusted dr. bill's brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rapid Recovery Support:** Colostrum and Echinacea accelerate healing and reduce inflammation after illness or infection.
- • **All-Age Wellness Formula:** Safe and effective for kittens, adults, and seniors—because every cat deserves peak health.
- • **Cellular Defense Powerhouse:** Vitamin C, Zinc & Nrf2 activators neutralize free radicals to protect cells from oxidative stress.
- • **Science-Backed Immunity Boost:** Clinically proven Beta Glucan & Turkey Tail mushrooms fortify your cat’s natural defenses.
- • **Veterinarian-Formulated & USA Made:** Crafted by Dr. Bill Barnett with 40+ years of expertise, ensuring purity, safety, and trusted results.

## Overview

Dr. Bill’s Feline Immune Support is a premium 60g powder supplement designed to enhance your cat’s immune system at every stage of life. Featuring a potent blend of clinically studied ingredients like Beta Glucan, Turkey Tail mushrooms, Colostrum, Vitamin C, and Zinc, it supports cellular health, reduces oxidative stress, and promotes faster recovery. Developed by a leading veterinarian and made in the USA, this formula delivers trusted, science-backed immune defense for cats who deserve the best.

## Description

desertcart.com : Dr. Bill’s Feline Immune Support | Boosts Cat Immunity and Health with Colostrum, Beta Glucan, Turkey Tail Mushroom, Zinc & Vitamin C | Powder Supplement for Cats of All Ages : Pet Supplies

Review: Great! - Works literally wonders!! Helped my cat with Virus.
Review: My cat loves it - My cat is FVI positive can I recently got this to help boost his immune system he is suffering from a secondary infection and he has been on antibiotics for a while so he does love the taste of this I sprinkled it over hard cat food and he ate it just fine and he ate it while I mixed into his food the other thing I got along with is was the 15 and one multivitamin which has a bunch of necessary B12 and other multivitamins the only thing I do not like is the packaging in the scoop is extremely tiny so you have to dig around to find it inside of the pack which can make a mess

## Features

- Supports a Strong, Resilient Immune System: Helps your cat fight off illness, recover faster, and stay healthy year-round with proactive daily immune support. Ideal for kittens, adults, and senior cats.
- Backed by Science, Powered by Nature: Features clinically studied ingredients like Beta Glucan and Turkey Tail Mushroom to strengthen immune cells, support gut health, health defense, even environmental and seasonal allergies.
- Protects at the Cellular Level: Nrf2 Antioxidant Activators, Vitamin C, and Zinc help neutralize harmful free radicals, reduce oxidative stress, and support healthy cellular function for long-term wellness.
- Promotes Faster Recovery & Response: Colostrum, Echinacea, and other immune-boosting compounds aid T-cell activity and reduce inflammation, helping your cat bounce back quicker from everyday immune challenges.
- Veterinarian-Formulated & Made in the USA: Developed by Dr. Bill Barnett, one of America’s top animal health experts with 40+ years of experience. Crafted in the USA with premium ingredients for purity, safety, and results you can trust.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B075HCGDXL |
| Active Ingredients | Colostrum, Echinacea, Beta 1,3/1,6 Glucan, Turkey Tail Mushrooms, Nrf2 Antioxidant Activators, Vitamin C & Zinc Active Ingredients Colostrum, Echinacea, Beta 1,3/1,6 Glucan, Turkey Tail Mushrooms, Nrf2 Antioxidant Activators, Vitamin C & Zinc See more |
| Best Sellers Rank | #24,518 in Pet Supplies ( See Top 100 in Pet Supplies ) #8 in Cat Antioxidant Supplements |
| Brand | Dr. Bill's |
| Brand Name | Dr. Bill's |
| Customer Reviews | 4.2 out of 5 stars 499 Reviews |
| Flavor | Bacon |
| Included Components | Scoop |
| Item Form | Powder |
| Item Weight | 60 Grams |
| Manufacturer | Dr. Bill's |
| Manufacturer Part Number | DB-FIS-60- UPC |
| Pet Type | Cat |
| Product Benefits | Immune Health | Immune Response | Cellular Protection | A Strong, Healthy Life |
| Specific Uses For Product | Health Defense, Improving Cellular Health, Nrf2 Antioxidant Activation, Reducing Oxidative Stress, The Innate Immune System |
| Target Species | Cat |
| UPC | 859765007027 |
| Unit Count | 60.00 Grams |

## Product Details

- **Brand:** Dr. Bill's
- **Flavor:** Bacon
- **Item Form:** Powder
- **Item Weight:** 60 Grams

## Images

![Dr. Bill’s Feline Immune Support | Boosts Cat Immunity and Health with Colostrum, Beta Glucan, Turkey Tail Mushroom, Zinc & Vitamin C | Powder Supplement for Cats of All Ages - Image 1](https://m.media-amazon.com/images/I/71nwpIDxAGL.jpg)
![Dr. Bill’s Feline Immune Support | Boosts Cat Immunity and Health with Colostrum, Beta Glucan, Turkey Tail Mushroom, Zinc & Vitamin C | Powder Supplement for Cats of All Ages - Image 2](https://m.media-amazon.com/images/I/81c22GHvKWL.jpg)
![Dr. Bill’s Feline Immune Support | Boosts Cat Immunity and Health with Colostrum, Beta Glucan, Turkey Tail Mushroom, Zinc & Vitamin C | Powder Supplement for Cats of All Ages - Image 3](https://m.media-amazon.com/images/I/81UPmyuX24L.jpg)
![Dr. Bill’s Feline Immune Support | Boosts Cat Immunity and Health with Colostrum, Beta Glucan, Turkey Tail Mushroom, Zinc & Vitamin C | Powder Supplement for Cats of All Ages - Image 4](https://m.media-amazon.com/images/I/8109-jJ8s2L.jpg)
![Dr. Bill’s Feline Immune Support | Boosts Cat Immunity and Health with Colostrum, Beta Glucan, Turkey Tail Mushroom, Zinc & Vitamin C | Powder Supplement for Cats of All Ages - Image 5](https://m.media-amazon.com/images/I/81fR-Kz+yTL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Why is there so much arginine in the product? My herpes cat needs support but Im afraid to give it to him as arginine triggers the virus.**
A: Hello - Thank you for your question. We include Arginine in Feline Immune Support because Arginine is the most important essential amino acid required by the adult cat. Arginine detoxifies ammonia, which results from the breakdown of proteins. It also has an important function in the urea cycle. If a cat goes without Arginine for very long, even a few hours, it will die. The daily requirement is set at 2,600 mg/day for the average size cat.  Arginine is an essential amino acid, which means that it must come from their diet as they cannot produce it internally.   
Dr. Bill's The Feline Immune Support provides 29.06 mg of arginine/scoop or about 1.12% of the daily needs, as cats will also receive arginine in a healthy diet. 
The best sources of arginine: 
1.	Nuts and seeds. Seeds and nuts are high in arginine. Nuts and seeds are significant sources of arginine. 
2.	Meat products. Meat is a complete source of protein because it includes all of the amino acids the body requires, including arginine.
3.	Legumes. Chickpeas are a great source of protein and provide plenty of arginine. Legumes are a family that includes beans, peas, and pulses.
4.	Seaweed. Seaweed is a popular health food that provides high levels of arginine. A cup of dried seaweed contains 4.645 g of the amino acid.
You can see why wild cats prefer to hunt for animal source protein (red meat) since nuts, legumes and seaweed were not likely available sources.  Pet foods today may provide some red meat, but the most likely outcome is that most cats eating dry food or wet foods using seafood entrees or chicken need supplemental arginine in order to thrive.
Research shows that while it is true that Arginine has been shown to be required in the formation of herpesvirus capsid protein, most studies recommend NOT reducing arginine in the cat because it is so essential for health. Any correlation between maintaining normal arginine levels and the triggering of herpesvirus has not been shown. 
Let us know if you have any further questions!
Dr. Bill Barnett

**Q: I have always ordered health defense and ordered immune by mistake. cab it be returned if opened but not used?**
A: I would ask Amazon; being it was opened...

**Q: How many mg of lactoferrin is in this?   And is it bovine lactoferrin?**
A: There are 3.63 mg lactoferrin in every 630 mg level scoop.  Yes, it is bovine lactoferrin.

**Q: Can this help cats heal from Stomatitis?**
A: Feline Immune Support is designed to boost the innate immune system, which may help the body fight off the primary causes of stomatitis such as viruses, bacteria or periodontal disease.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great!
*by A***R on July 3, 2026*

Works literally wonders!! Helped my cat with Virus.

### ⭐⭐⭐⭐⭐ My cat loves it
*by B***E on September 15, 2024*

My cat is FVI positive can I recently got this to help boost his immune system he is suffering from a secondary infection and he has been on antibiotics for a while so he does love the taste of this I sprinkled it over hard cat food and he ate it just fine and he ate it while I mixed into his food the other thing I got along with is was the 15 and one multivitamin which has a bunch of necessary B12 and other multivitamins the only thing I do not like is the packaging in the scoop is extremely tiny so you have to dig around to find it inside of the pack which can make a mess

### ⭐⭐⭐⭐⭐ Great product
*by K***N on December 2, 2025*

Over the years this item has saved the lives of several of my cats. I highly recommend it for your companion animals.

## Frequently Bought Together

- Dr. Bill’s Feline Immune Support | Boosts Cat Immunity and Health with Colostrum, Beta Glucan, Turkey Tail Mushroom, Zinc & Vitamin C | Powder Supplement for Cats of All Ages
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-07*