--- product_id: 771208268 title: "Feline Immune Support Supplement for Cats Natural Defenses" brand: "dr. bill's" price: "S$55" currency: SGD in_stock: true reviews_count: 5 category: "Dr. Bill's" url: https://www.desertcart.sg/products/771208268-feline-immune-support-supplement-for-cats-natural-defenses store_origin: SG region: Singapore --- # Turkey Tail Mushroom boosts gut & immune health Vitamin C & Zinc for cellular antioxidant protection Clinically studied Beta Glucan for immune defense Feline Immune Support Supplement for Cats Natural Defenses **Brand:** dr. bill's **Price:** S$55 **Availability:** ✅ In Stock ## Summary > 🛡️ Elevate your cat’s immunity — because every paw deserves peak health! ## Quick Answers - **What is this?** Feline Immune Support Supplement for Cats Natural Defenses by dr. bill's - **How much does it cost?** S$55 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/771208268-feline-immune-support-supplement-for-cats-natural-defenses) ## 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 - • **All-Age Immune Support:** Formulated for kittens, adults, and seniors to maintain year-round resilience and vitality. - • **Faster Recovery Formula:** Colostrum and Echinacea accelerate healing and reduce inflammation after illness or stress. - • **Cellular-Level Protection:** Powerful antioxidants like Vitamin C and Zinc neutralize free radicals, promoting long-term cellular health. - • **Veterinarian-Trusted Quality:** Developed by Dr. Bill Barnett with 40+ years of expertise, made in the USA with premium, safe ingredients. - • **Scientifically Proven Immune Boost:** Clinically backed Beta Glucan and Turkey Tail Mushroom elevate your cat’s natural defenses to peak performance. ## Overview Dr. Bill’s Feline Immune Support is a premium powder supplement designed to strengthen cats’ immune systems at every life stage. Featuring a patented Beta Glucan, Turkey Tail Mushroom, and potent antioxidants like Vitamin C and Zinc, it supports immune cell function, gut health, and cellular protection. Developed by a leading veterinarian and crafted in the USA, this scientifically formulated blend helps cats recover faster, fight infections, and maintain long-term wellness. ## Description This potent blend of immune enhancers bolsters your cat’s natural immune response, increasing their ability to defend against illness and aid in cellular protection. Immune Support contains a patented and proprietary long chain Beta 1,3 1,6 D-Glucan that scientific research has shown can have a positive impact on the innate immune system, raising it to a level of peak effectiveness. 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 Review: Great product - Over the years this item has saved the lives of several of my cats. I highly recommend it for your companion animals. ## 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, and defend against bacteria, viruses, 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 | #87,723 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,582 in Cat Health Supplies | | Brand | Dr. Bill's | | Brand Name | Dr. Bill's | | Customer Reviews | 4.3 out of 5 stars 318 Reviews | | Flavor | Bacon | | Flavour | Bacon | | Included Components | Scoop | | Item Form | Powder | | Item Weight | 60 Grams | | 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 | | 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 - **Flavour:** Bacon - **Item form:** Powder - **Item weight:** 60 Grams ## Images ![Feline Immune Support Supplement for Cats Natural Defenses - Image 1](https://m.media-amazon.com/images/I/71nwpIDxAGL.jpg) ## 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 ### ⭐⭐⭐⭐⭐ My cat loves it *by B***E on 15 September 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 2 December 2025* Over the years this item has saved the lives of several of my cats. I highly recommend it for your companion animals. ### ⭐⭐⭐⭐ No issues here other than... *by B***N on 5 May 2026* The only "con" is the teeny-tiny scoop. I just converted it to 1/2 tsp and that works just fine. Cat will eat it and I've not had any trouble with vomiting. ## 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 - Life Extension Cat Mix, cat Food Supplements, Heart Health, probiotics, L-arginine, Taurine, B12, folic Acid, Vitamin C, Vitamin E, Rosemary, Nutrient Absorption, Gluten-Free, Non-GMO, 85 Servings - Zesty Paws Wild Alaskan Omega-3 Blend Pollock + Salmon Oil for Dogs and Cats- Skin and Coat Support, Omega 3 Supplement for Pets, 8.5oz --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/771208268-feline-immune-support-supplement-for-cats-natural-defenses](https://www.desertcart.sg/products/771208268-feline-immune-support-supplement-for-cats-natural-defenses) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-11-02*