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 Antioxidant Supplements

Protect your horse at the cellular level with an equine antioxidant supplement. Free radicals are the damaging by-products of normal cell activity. Too many free radicals may be a primary cause of cell destruction, inflammation, aging and degenerative conditions. Antioxidants such as Vitamin C, Vitamin E, Selenium and Grape Seed Extract 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
  • $16.05 - $131.95

    Med-Vet Pharmaceuticals (MVP)
    Support for sore muscles
    • 1,000 IU of vitamin E, 2 mg of selenium & 3,000 mg of magnesium
  • $31.95 - $101.95

    Vita-Flex Nutrition
    2,500 IUs of vitamin E
    • 2,500 IUs of vitamin E per 1/2 oz. serving
  • $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
  • $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
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Healthy Horses  ❤  Happy Riders