Immugen is a comprehensive immune support formula that contains nutrients, botanicals, and glandulars. Small companion animals face numerous immune system challenges, especially when they are either very young or older. Immugen provides vitamin, mineral, amino acid, botanical, and glandular ingredients that optimize a companion animal's immune system function. For example, studies have demonstrated the ability of Echinacea angustifolia to activate the body's natural killer cells.Astragalus membranaceus has a long history of use for stimulating immune function. Reishi mushroom extract stimulates B- and T-lymphocytes, the major cellular components of the body's adaptive immune response. Thymus extracts can naturally enhance several immune parameters. Zinc promotes acquired immunity and macrophage function. And vitamins A and C support the production and activity of white blood cells. Animal Health Immune SupportActive Ingredients per 3.5- gram soft chewL-Glutamine 200 mgAscorbic Acid (Vitamin C) 175 mgDimethylglycine (Hydrochloride) 70 mgN-Acetyl-L-Cysteine 70 mgEchinacea angustifolia (root) 50 mgReishi Mushroom (Ganoderma lucidum) 50 mgd-Alpha Tocopheryl (Vitamin E) (35 IU) 30 mgThymus (Bovine) 25 mgCoenzyme Q10 20 mgPyridoxal 5-Phosphate (Vitamin B6) 7 mgZinc (Picolinate) 3.5 mgAstragalus extract (root) (Astragalus membranaceus) 3.5 mgBeta Carotene (Vitamin A) (1,400 IU) 840 mcgVitamin A Palmitate (1,400 IU) 770 mcgCopper (Picolinate) 350 mcgFolate (L-5-Methyltetrahydrofolic Acid, Glucosamine Salt) 200 mcgManganese (Bisglycinate) 175 mcgMethylcobalamin (Vitamin B12) 100 mcgSelenium (L-Selenomethionine) 7 mcgInactive Ingredients (soft chew matrix)Arabic Gum, buffered white distilled vinegar, canola oil, citric acid, guar gum, maltodextrin, natural poultry flavor, rosemary extract, sunflower lecithin, sunflower oil, sweet potato powder, tapioca starch, vegetable glycerinSuggested UseCats: 1/2 chew dailyDogs: 1 chew per 25 lbs body weight dailyWarningSafe use in pregnant animals or animals intended for breeding has not been proven. If animal's condition worsens or does not improve, stop product administration and consult your veterinarian. Federal law prohibits the off-label use of this product in ruminants. Potential drug interactions. Potential interactions with CYP1A2 & CYP3A drugs. Not recommended for long-term use.For animal use only. Keep out of the reach of children and animals. In case of accidental overdose, contact a health professional immediately.