VETCLASSICS CAS Options Extra Strength Immune & Antioxidant Support Chewable Tablets Dog & Cat Supplement, 120 count -

VetClassics CAS Options Extra Strength Immune & Antioxidant Support Chewable Tablets Dog & Cat Supplement, 120 count

By VetClassics
Rated 4.1429 out of 5 stars
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$64.99Chewy Price
$61.74Autoship Price
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About This Item


  • The immune system is the surveillance system of the body, when the immune system becomes weakened, it is essential to reestablish a healthy immune system balance quickly to maintain overall health.
  • Mushrooms contain polysaccharides, beta glucans, and triterpenoids that work synergistically to help support the immune system.
  • Antioxidants Coenzyme Q-10, Vitamin A, Vitamin C, Vitamin E and Milk Thistle help to scavenge free radicals that can cause cellular damage.
  • MADE IN THE USA and VETERINARIAN FORMULATED - All Vet Classics products are veterinarian formulated and manufactured in the USA in an FDA audited, cGMP compliant facility.
  • SATISFACTION GUARANTEED - All Vet Classics products come with a 100% satisfaction guarantee, if you are not satisfied for any reason you can get a full refund!

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Rated 4.1429 out of 5 stars
7 Reviews
Would recommend to a friend

7 Customer Reviews

Rated 1 out of 5 stars
By Pestty1 on Nov 26, 2021

Not quality product

Contacted the company about quality and source of the mushroom after my holistic vet told me to get a mushroom product that contains entire mushrooms not just parts. They could not answer my concerns and was told I would expect a return call. That never happened and follow up calls were never answered. do ur homework about mushrooms for immune response . There r other products that do the job. This one however in my view fails

Rated 5 out of 5 stars
By Redblazer on Sep 27, 2021

Chewable mushrooms

This is great. My 8 year old rescue lab has cancer. I used this product to boost her immune system. She loves them. Easy to chew before her meal. Her rescue sisters are jealous trying to eat these chewable tablets as well.

Rated 5 out of 5 stars
By Penny on Oct 7, 2021

These are great!

Our Vet recommended them for our 3 dogs. They really do help support their overall health and also help keep their teeth and gums healthy. The dogs eat them like candy. Great product!

Rated 3 out of 5 stars
By Mowgli on Oct 7, 2021

very large for cats

my cat had a very hard time eating this. I even cut in half and tried crushing it in his wet food.

Rated 5 out of 5 stars
By Neta on Aug 26, 2021

Great Product

This product was exactly what I was looking for and a much lower than I had been paying.

Rated 5 out of 5 stars
By PuppyGoddess on Mar 22, 2021

Keeping the "Zodiac Sign" Away for Nearly Three Years

My oldest girl just turned 12 yesterday (21 March 21). She had two nasty Mast Cell Tum0rs removed in August 2018. We immediately began seeing a holistic veterinarian to keep the "zodiac sign between Gemini & Leo" away. (We don't say the c-word so we don't jinx ourselves, we don't want that monster back in our lives). Our vet prescribed CAS Options and we have used it faithfully since then. Two tablets twice daily (with meals) for our Husky/GSD/Malamute/White Shepherd princess. I truly believe that this product has helped us keep her healthy and safe! I love that we can now get it from Chewy without an Rx. Thanks, Chewy, for helping us keep our babies safe & healthy!

Rated 5 out of 5 stars
By Annie on Jun 14, 2021


I am just about to go through my first container. My vet recommended this product. I am putting faith that it is doing it’s job.