Ship speed applies to in stock items, pending location. Does not include personalized items like engraving, embroidery, SmartPaks, or PortionPaks. Complete details on our Shipping Policies page.
SmartPaks help you take great care of your horse, so we take great care of you with SmartPerks! When you order your horse's supplements in SmartPaks, you're automatically* eligible for our FREE SmartPerks benefits, including:
  • Free ground shipping on what you want, when you want it
  • 10% off all Smartpak brand tack, apparel, and gear
  • A free Team SmartPak calendar, exclusive email offers and discounts, and more!
Learn more about SmartPerks
*At least one horse's individual SmartPaks must be over $40. Some exclusions apply.
Visit SmartPak.com/SmartPerks or call 1-800-461-8898 for details.

Horse Immune Supplements

A healthy immune system is necessary for your horse to withstand stress in the environment. If your horse is a senior, working hard, travels often, or is recovering, he may benefit from the support of a supplement that promotes immune health. Immune supplements provide antioxidants such as vitamin C, vitamin E, selenium, and grape seed extract to help neutralize the damaging free radicals that are released during times of stress, illness, or heavy activity.

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  • $29.95 - $118.95

    SmartPak Equine
    Supports cellular health
    • Provides 2,500 IUs of natural vitamin E
    • Supports a healthy immune system and helps neutralize free radicals
  • $33.95 - $141.95

    SmartSupplements by SmartPak
    Comprehensive support for endocrine health
    • Includes ingredients to support normal immune function, muscle development & healthy skin & coat
    • 1,000 mg of chasteberry (vitex agnus castus) for proper endocrine function
  • $42.95 - $85.95

    SmartSupplements by SmartPak
    Helps your horse manage stress
    • Adaptogenic herbs & potent antioxidants help protect cellular health and fight free radicals
    • 1,000 mg of AgariPlex?, a proprietary mushroom blend, to help the body manage stress
  • $18.95 - $73.95

    SmartPak Equine
    Supports healthy immune & muscle function
    • Together, vitamin E & selenium support the immune system & help neutralize damaging free radicals
    • Provides 1,250 IUs of vitamin E & 0.625 mg of selenium per serving
  • $22.10 - $62.95

    Auburn Laboratories Inc
    Help protect your horse from stress
    • Concentrated liquid extract of adaptogenic herbs shown to support cellular immune function
  • $31.95 - $101.95

    Vita-Flex Nutrition
    2,500 IUs of vitamin E
    • 2,500 IUs of vitamin E per 1/2 oz. serving
  • $79.15 - $385.95

    Biomedica Labs
    Helps combat tissue damage
    • All of the benefits of the original formula, plus 100 mg of HA for superior joint support
    • 1,000 mg of Nutricol?, a potent antioxidant blend from foods shown to support cellular health
  • $29.95 - $62.95

    SmartSupplements by SmartPak
    Comprehensive antioxidant support
    • 3,000 IUs of vitamin E & 3,000 mg of vitamin C for overall cellular health
    • Includes grape seed extract & super oxide dismutase for comprehensive antioxidant support
  • $14.95 - $92.95

    Horse Health Products
    Supports healthy immune & muscle function
    • Contains 625 IUs of vitamin E & 1 mg of selenium
  • $53.95 - $269.95

    Biomedica Labs
    Supports normal healing
    • Includes a careful selection of ingredients that support joint and soft tissue health
    • 1,000 mg of Nutricol?, a potent antioxidant blend from foods shown to support cellular health
  • $10.25 - $194.95

    Auburn Laboratories Inc
    Immune & muscle support
    • All the benefits of the original APF, plus more
    • Designed for horses under stress and elite equine athletes
  • $48.05 - $89.95

    Vita-Flex Nutrition
    Supplement for overall health
    • Provides a balanced spectrum of essential nutrients
    • Fortified with GlutaSyn?, a unique milk serum protein isolate that supports immune function
  • $8.75 - $21.95

    Hilton Herbs
    100% pure garlic
    • Garlic is one of the most widely used medicinal herbs in the world
  • $16.95 - $34.95

    SmartPak Equine
    Natural antioxidant support
    • Many horses need more vitamin C than they can make themselves or get from feed & forage
    • This formula provides 7,000 mg of pure vitamin C
  • $17.75 - $84.95

    Finish Line
    Supports healthy immune & muscle function
    • Offers 1,250 IUs of vitamin E & 1.1 mg of selenium per serving
  • $55.20 - $95.97

    Response Products
    Supports joints, immune health & mental focus
    • Provides 5,500 mg of cetyl myristoleate for normal joint function
    • Includes Re-Vitalize? Proprietary Blend for immune health & to help maintain focus
  • $10.95 - $196.95

    SmartSupplements by SmartPak
    The support he needs for optimal performance
    • Includes probioitcs & prebiotics for digestive health, plus electrolytes & antioxidants
    • Ideal for helping your horse cope with the demands of trailering, competing, and other stresses
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Healthy Horses  ❤  Happy Riders