--- product_id: 94841025 title: "- Vet Classics CAS Options Extra Strength Immune Support for Dogs, Cats – Pet Health Supplement, Dog Antioxidant Care – Extra-Strength Dog Supplement Formula – 120 Soft Chews" brand: "vet classics" price: "€ 110.01" currency: EUR in_stock: true reviews_count: 6 category: "Vet Classics" url: https://www.desertcart.pt/products/94841025-vet-classics-cas-options-extra-strength-immune-support-for-dogs store_origin: PT region: Portugal --- # 4 potent mushroom antioxidants 120 soft chews, easy daily dose Extra-strength immune boost - Vet Classics CAS Options Extra Strength Immune Support for Dogs, Cats – Pet Health Supplement, Dog Antioxidant Care – Extra-Strength Dog Supplement Formula – 120 Soft Chews **Brand:** vet classics **Price:** € 110.01 **Availability:** ✅ In Stock ## Summary > 🛡️ Elevate your pet’s defense game with nature’s strongest immune formula! ## Quick Answers - **What is this?** - Vet Classics CAS Options Extra Strength Immune Support for Dogs, Cats – Pet Health Supplement, Dog Antioxidant Care – Extra-Strength Dog Supplement Formula – 120 Soft Chews by vet classics - **How much does it cost?** € 110.01 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/94841025-vet-classics-cas-options-extra-strength-immune-support-for-dogs) ## Best For - vet classics enthusiasts ## Why This Product - Trusted vet classics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Mushroom-Powered Immunity:** Harness the natural antioxidant power of maitake, shiitake, turkey tail & reishi mushrooms for peak pet health. - • **Proven Life-Changing Results:** Real pet parents report dramatic health turnarounds, from tumor shrinkage to extended vitality—don’t let your pet miss out. - • **Soft Chews for Effortless Dosing:** 120 easy-to-administer soft chews ensure consistent daily immune support without the hassle. - • **Veterinarian-Formulated Excellence:** Trusted since 1994, crafted by vets & scientists to support your dog or cat’s immune system with proven ingredients. - • **Inflammation Defense & T-Cell Support:** Supports normal inflammatory response and enhances T-helper cell activity to keep your furry friend active and vibrant. ## Overview Vet Classics CAS Options Extra Strength Immune Support is a premium, veterinarian-developed supplement featuring a powerful blend of four medicinal mushrooms. Designed for dogs and cats, its 120 soft chews deliver potent antioxidant and immune system support, promoting healthy inflammatory response and T-cell activity. Trusted by pet owners for over 25 years, this formula helps maintain vitality, combat free radicals, and supports long-term wellness in your furry companions. ## Description desertcart.com : Vet Classics CAS Options Extra Strength Immune Support for Dogs, Cats – Pet Health Supplement, Dog Antioxidant Care – Extra-Strength Dog Supplement Formula – 120 Soft Chews : Pet Supplies Review: Truly a Life Saver! - I don’t ordinarily write reviews, but I had to write one for CAS Options. This supplement literally saved my dog’s life. In 2013, our family was exposed to illegal, industrial grade pesticides. The humans struggled w severe illness for at least two years, and our 11 year old dog (a 13lb terrier) was at death’s door. His lungs were filled w fluid and inflammation, he was exhausted and could hardly walk, he could not hold his urine, and his kidneys were breaking down. Our vet tried every prescription he could think of, but honestly, there was very little progress and euthanasia was brought up by the vet staff. Desperate, I brought my dog to a vet who specialized in vitamin and diet supplementation. She recommended CAS Options as a foundational, daily support. This supplement not only brought my pup back to FULL AND COMPLETE health, but I believe it kept him from developing cancer (which the vets said would almost definitely happen due to the pesticides). My dog was happy and healthy for 6 more years!! My dog passed a few months ago, at age 17. He struggled for about a week while we tried to fight off a c-difficle intestinal bug. Then one night, he had a seizure. I picked him up, held him, and prayed aloud as I felt his heart and breathing stop. It was very quick- maybe 30 seconds? Not a bad way to go at all. I miss him terribly, but I feel blessed to have had him healthy and happy for 17 years! From 2013 until the day he passed away, my dog always got his half tablet of CAS Options. I sincerely believe this supplement kept him as healthy as possible during his senior years. He truly was vibrant, active, and generally healthy all those years! I can’t say enough positive things about this product, honestly. Oh! One hesitation I know that my family has in purchasing this product for their pups is the cost. Yes, this supplement is not inexpensive. However, I truly believe that this supplement spared me thousands of additional dollars in medication and vet bills, as well as the additional heartache and suffering for me and my dog. When thinking about it in those terms, CAS Options was a bargain! Like I said, I very rarely write reviews, and I cant tell you the last time I was so enthusiastic about a product. I wanted to write this so that others have the opportunity to return their dog to health, too. Review: HIGHLY RECOMMEND! - This is the absolute answer to my poodle's fatty tumors. Vet said nothing needed to be done unless they attached deeper. He had at least four maybe more and two of them quiet large especially the one on his chest. I ran across this as I was googling things and decided to give it a try even though the item seemed quiet expensive. I started giving 1/2 of a pill in the morning and the other half in the evening. After 3 to 4 weeks I could tell the tumors were getting smaller. I started him on him Sept 1st 2020 and now October 18, you can barely feel them. He use to choke after drinking water at times but no more. He has also loss weight due to loosing the fatty tumors. For those who said they were stinky and made their pet sick. I do understand as this are made from mushrooms and it they smell stinky or sour, they are bad. My has an expiration date on the lid which say best by 12-2022. So I have a couple of years. I'm not sure how long I need to give the halves to him after the tumors are totally gone. I highly recommend these. ## Features - DOG IMMUNE SUPPORT: Fuel your pet with the support he needs to stay healthy and support his immune system. - PET HEALTH SUPPLEMENT: Give your furry friend the immune support he needs with these health supplements for dogs and cats that include some natural ingredients such as maitake mushrooms, shiitake mushrooms, turkey tail mushrooms and reishi mushrooms. - PET IMMUNE SUPPORT FORMULA: A healthy immune system is essential for dogs and cats. Ensure your furry friend remains active and healthy with these pet health supplements that support normal inflammatory response while supporting T-helper cell activity. - VETERINARIAN FORMULATED AND RECOMMENDED DOG & CAT SUPPLEMENTS: Rich in antioxidants, these immune support dog supplements to fight against free radicals. - PREMIUM PET SUPPLEMENTS: Since 1994, VetClassics has offered a high-quality line of pet health supplements developed by veterinarians and scientists to support care for dogs, cats and horses. Choose from an impressive collection of pet health supplements that address hip and joint support, cardiovascular care, liver and urinary support. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01HH7A8ZA | | ASIN | B01HH7A8ZA | | Best Sellers Rank | #15,409 in Pet Supplies ( See Top 100 in Pet Supplies ) #13 in Dog Antioxidant Supplements | | Brand Name | Vet Classics | | Customer Reviews | 4.4 4.4 out of 5 stars (374) | | Date First Available | June 23, 2016 | | Date First Available | June 23, 2016 | | Is Discontinued By Manufacturer | No | | Item Package Dimensions L x W x H | 6.38 x 3.74 x 3.66 inches | | Item Weight | 16.9 Ounces | | Item model number | FBA_CCAS-120VC | | Item model number | FBA_CCAS-120VC | | Manufacturer | Vet Classics | | Manufacturer | Vet Classics | | Model Name | FBA_CCAS-120VC | | Number of Items | 1 | | Package Dimensions | 6.38 x 3.74 x 3.66 inches; 1.06 Pounds | | Size | 120 Soft Chews | | Target Audience Keyword | dogs, house-cats | ## Product Details - **Brand:** Vet Classics - **Flavor:** Turkey - **Item Form:** Tablet - **Item Weight:** 16.9 Ounces - **Manufacturer:** Vet Classics ## Images ![- Vet Classics CAS Options Extra Strength Immune Support for Dogs, Cats – Pet Health Supplement, Dog Antioxidant Care – Extra-Strength Dog Supplement Formula – 120 Soft Chews - Image 1](https://m.media-amazon.com/images/I/41IfOiP1baL.jpg) ![- Vet Classics CAS Options Extra Strength Immune Support for Dogs, Cats – Pet Health Supplement, Dog Antioxidant Care – Extra-Strength Dog Supplement Formula – 120 Soft Chews - Image 2](https://m.media-amazon.com/images/I/71Ci7JOI4xL.jpg) ![- Vet Classics CAS Options Extra Strength Immune Support for Dogs, Cats – Pet Health Supplement, Dog Antioxidant Care – Extra-Strength Dog Supplement Formula – 120 Soft Chews - Image 3](https://m.media-amazon.com/images/I/71MN6IyXV2L.jpg) ![- Vet Classics CAS Options Extra Strength Immune Support for Dogs, Cats – Pet Health Supplement, Dog Antioxidant Care – Extra-Strength Dog Supplement Formula – 120 Soft Chews - Image 4](https://m.media-amazon.com/images/I/71OpD0QFrQL.jpg) ![- Vet Classics CAS Options Extra Strength Immune Support for Dogs, Cats – Pet Health Supplement, Dog Antioxidant Care – Extra-Strength Dog Supplement Formula – 120 Soft Chews - Image 5](https://m.media-amazon.com/images/I/71aeo1+x-TL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What is the mg of each active ingredient?** A: Active IngredientsReishi Mushroom 578 mgShiitake Mushroom 446 mgTurkey Tail Mushroom 150 mgVitamin C 60 mgMaitake Mushroom 95 mgN-acetylcysteine 79 mgCoenzyme Q-10 1 mgSelenium 26 mcgVitamin A 1050 I.U.Vitamin E (d-alpha tocopherol) 53 I.U.Ingredients - Brewer's Dried Yeast, Dicalcium Phosphate, Distilled Monoglycerides, Dried Whey Solubles, Magnesium Stearate, Maltodextrin, Microcrystalline Cellulose, Natural Flavoring, Natural Mixed Tocopherols, Salt, Silicon Dioxide.This can be found at http://www.onlynaturalpet.com/products/Vet-Resources-CAS-Options-Dog-Supplement/152003.aspx **Q: The ingredients lists n-acetyl-l-cysteine the bottle i received does not have it listed but has milk thistle. do i have an old or new version?** A: I’m not sure old or new version but my bottle does not indicate n-acetyl-l-cysteine. Expire date is 03/2023. **Q: It looks like they took the turkey tail out of it and added green tea extract?** A: My version has 150 mg of Turkey Tail Mushroom per tablet. No green tea extract. **Q: Can you tell me what the mushrooms are grown in?** A: Different mushrooms are grown different ways. Never give a dog a wild mushroom! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Truly a Life Saver! *by A***R on February 14, 2020* I don’t ordinarily write reviews, but I had to write one for CAS Options. This supplement literally saved my dog’s life. In 2013, our family was exposed to illegal, industrial grade pesticides. The humans struggled w severe illness for at least two years, and our 11 year old dog (a 13lb terrier) was at death’s door. His lungs were filled w fluid and inflammation, he was exhausted and could hardly walk, he could not hold his urine, and his kidneys were breaking down. Our vet tried every prescription he could think of, but honestly, there was very little progress and euthanasia was brought up by the vet staff. Desperate, I brought my dog to a vet who specialized in vitamin and diet supplementation. She recommended CAS Options as a foundational, daily support. This supplement not only brought my pup back to FULL AND COMPLETE health, but I believe it kept him from developing cancer (which the vets said would almost definitely happen due to the pesticides). My dog was happy and healthy for 6 more years!! My dog passed a few months ago, at age 17. He struggled for about a week while we tried to fight off a c-difficle intestinal bug. Then one night, he had a seizure. I picked him up, held him, and prayed aloud as I felt his heart and breathing stop. It was very quick- maybe 30 seconds? Not a bad way to go at all. I miss him terribly, but I feel blessed to have had him healthy and happy for 17 years! From 2013 until the day he passed away, my dog always got his half tablet of CAS Options. I sincerely believe this supplement kept him as healthy as possible during his senior years. He truly was vibrant, active, and generally healthy all those years! I can’t say enough positive things about this product, honestly. Oh! One hesitation I know that my family has in purchasing this product for their pups is the cost. Yes, this supplement is not inexpensive. However, I truly believe that this supplement spared me thousands of additional dollars in medication and vet bills, as well as the additional heartache and suffering for me and my dog. When thinking about it in those terms, CAS Options was a bargain! Like I said, I very rarely write reviews, and I cant tell you the last time I was so enthusiastic about a product. I wanted to write this so that others have the opportunity to return their dog to health, too. ### ⭐⭐⭐⭐⭐ HIGHLY RECOMMEND! *by R***H on October 18, 2020* This is the absolute answer to my poodle's fatty tumors. Vet said nothing needed to be done unless they attached deeper. He had at least four maybe more and two of them quiet large especially the one on his chest. I ran across this as I was googling things and decided to give it a try even though the item seemed quiet expensive. I started giving 1/2 of a pill in the morning and the other half in the evening. After 3 to 4 weeks I could tell the tumors were getting smaller. I started him on him Sept 1st 2020 and now October 18, you can barely feel them. He use to choke after drinking water at times but no more. He has also loss weight due to loosing the fatty tumors. For those who said they were stinky and made their pet sick. I do understand as this are made from mushrooms and it they smell stinky or sour, they are bad. My has an expiration date on the lid which say best by 12-2022. So I have a couple of years. I'm not sure how long I need to give the halves to him after the tumors are totally gone. I highly recommend these. ### ⭐⭐⭐⭐ A Great Option for Immune Support! *by T***H on September 22, 2016* I decided to try on my two senior labradors, both with fatty tumors, after reading reviews that some said, helped. I will say upfront, that I don't give the directed amount due to cost of CAS :(. My labs are 120 lbs and 90 lbs, so even at 4 per day per dog, it goes quickly. It is much cheaper than vet visits, but it all adds up as I also give my dogs several other natural meds which they cannot do without because of the benefit it provides (Only Natural Pet's Get Up and Go, Thyroid Support and Resources Pain Plus). So our monthly supplemental bill is not pretty, but my conscience simply cannot give them RX drugs, even if cheaper, when I know they will have ill side-effects. My 11 yr old female lab seems to benefit greatly from CAS, she acts like a young pup again and her tumors seem to be decreasing in size. My 13 yr old male lab continues to get more tumors, and doesn't seem to have changed much in affect, but I am sure it is helping to support his immune system none-the-less. The only reason for 4 stars....price! ## Frequently Bought Together - Vet Classics CAS Options Extra Strength Immune Support for Dogs, Cats – Pet Health Supplement, Dog Antioxidant Care – Extra-Strength Dog Supplement Formula – 120 Soft Chews - Vet Classics Pain Plus Extra Strength Health Supplement for Dogs - 120 Soft Chews - Vet Classics ArthriEASE-Gold Advanced Joint Support for Dogs, Cats, – Supports Pet Flexibility, Discomfort – Helps Improve Dog Joint Movement, Cat Cartilage Health - Includes Antioxidants – 120 Ct. --- ## 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.pt/products/94841025-vet-classics-cas-options-extra-strength-immune-support-for-dogs](https://www.desertcart.pt/products/94841025-vet-classics-cas-options-extra-strength-immune-support-for-dogs) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-05-30*