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

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A powerful blend of four functional mushrooms: Maitake, Reishi, Shiitake, and Turkey Tail combined with antioxidants to provide extra strength immune support. Formulated to support and balance the immune system to promote overall health and well-being for pets, especially during times of stress.

Key Benefits
  • 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!

Cautions: Safe use in pregnant animals or animals intended for breeding has not been proven. If animals condition worsens or does not improve, stop product administration and consult your veterinarian. Warnings: For animal use only. Keep out of reach of children and animals. In case of accidental overdose, contact a health professional immediately. Use only as directed by your veterinarian. Responses to supplements may vary by animal.

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  • Item Number
  • Weight
    1.2 pounds
  • Lifestage
    Adult, Puppy, Kitten, Senior
  • Breed Size
    Small Breeds, Medium Breeds, Large Breeds
  • Food Form
  • Product Form
    Soft Chew
  • Drug Type
Nutritional Info

Active Ingredients per 4 g Soft Chew: Reishi Mushroom 578 mg, Shiitake Mushroom 446 mg, Turkey Tail Mushroom 150 mg, Maitake Mushroom 95 mg, N-acetyl-L-cysteine 79 mg, Vitamin C (Calcium Ascorbate) 60 mg, Coenzyme Q-10 1 mg, Selenium 0.026 mg, Vitamin A 1,050 IU, Vitamin E (D-alpha Tocopheryl Acetate) 53 IU.

Inactive Ingredients: Brewer's Dried Yeast, Canola Oil, Dried Potato Product, Flaxseed, Glycerin, Lecithin, Mixed Tocopherols, Natural Flavoring, Rosemary Extract, Sorbic Acid, Tapioca Starch, Vegetable Oil, Water.

Feeding Instructions
Weight Amount(Chews)
Under 25 lbs 1/2
26-50 lbs 1
51-100 lbs 2
Over 100 lbs 3

Vet Classics CAS Options

CAS Options is recommended to provide extra strength immune and antioxidant support.  A unique blend of four functional mushrooms—reishi, shiitake, turkey tail, and maitake—work synergistically with milk thistle, vitamin A, vitamin, C, vitamin E, coenzyme Q-10, and selenium to help support and balance the immune system and promote overall health and wellness.

Product Grouping

Mushrooms are a Superfood!

Reishi, shiitake, maitake, and turkey tail mushrooms contain immuno-supportive compounds like polysaccharides, beta-glucans, triterpenoids, lentinans, and amino acids. These may help balance immune system cells such as macrophages, natural killer cells and helper T-cells, which work together to neutralize damaging cells while nourishing the development of healthy cells.

The Immune System

The immune system is the surveillance and defense system of the body.  A healthy immune system recognizes cellular change, targets damaged cells and eliminates them to help protect the body from invaders such as toxins, viruses, and bacteria. If the immune system is compromised, it is essential to reestablish a healthy immune balance quickly, to keep it working properly for overall health.

Dog Running

Immune and Antioxidant Support

CAS Options Extra Strength Immune & Antioxidant Support is veterinarian formulated and recommended for use in dogs and cats over the age of 12 weeks.  It is available in soft chews and chewable tablets.

About Vet Classics

Since 1994, Vet Classics has offered a high-quality integrative, complementary pet health supplement line developed by veterinarians and staff scientists for dogs, cats and horses. All products are manufactured in Temecula, CA USA, in fully compliant cGMP Standard facilities following the highest industry standard. Their products carry the NASC Quality Seal which provides a symbol of quality assurance for consumers.

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