As we move deeper into fall, the amount of green forage decreases and many horses begin winding down their turnout time. That’s a perfect moment to check in on nutrients that tend to drift low, especially Vitamin E. Because vitamin E is a powerful antioxidant, muscle & nerve support nutrient, and immune ally, ensuring your horse has enough can make a real difference in comfort, recovery, and long-term health.

What Does Vitamin E Do for Horses?

• Antioxidant Protection & Cellular Health: It helps neutralize free radicals that naturally occur as horses exert themselves or experience stress. Without enough antioxidant support, muscle and nerve cells can undergo oxidative damage.
• Muscle & Nerve Function: Deficiency has been linked to muscle weakness or neuromuscular disease in horses.
• Immune Support: When pasture is scarce and environmental stressors increase, vitamin E helps support the horse’s immune defenses.

Why Many Horses Don’t Get Enough Vitamin E

• Stored Forage Loses Vitamin E: When hay is cut, dried, baled, and stored, as much as 30–80% or more of its vitamin E content can degrade. That means that the longer your hay is stored after cutting, the less vitamin E your horse consumes.
• Limited Pasture Time: Horses housed in stalls or those with restricted grazing zones often lack access to fresh green grass, which is the best natural source of vitamin E. Many horses lack any access to good pasture, which means they lack the opportunity to consume vitamin E sources.
• Increased Demand During Work or Stress: Performance, training, illness, or even seasonal changes can raise oxidative stress and thus increase requirements.

Signs Your Horse May Be Low in Vitamin E

• Muscle stiffness or soreness
• Slower recovery after exercise
• Poor topline or loss of muscle
• Nervous signs, lack of coordination
• Weaker immune response or frequent illness

If your horse fits this profile, it’s worth checking with your vet and possibly running a serum alpha-tocopherol test.

Choosing the Right Vitamin E Supplement

• Look for natural source vitamin E (d-alpha-tocopherol) as it’s more bioavailable than many synthetic types.
• More is not necessarily better – look for a supplement that provides enough to make a difference without over-supplementing.
• Check stability and how well the supplement holds potency under feed/storage conditions.
• Match the supplement to your horse’s needs (maintenance, performance, broodmare, neurological support).

How Omega Fields Helps

Our Omega grandE® supplement is designed with this exact need in mind. It offers a stabilized flaxseed base (so your horse gets omega-3, 6 & 9) plus a bioavailable dose of natural vitamin E (d-alpha-tocopherol) in each scoop. Because consistency matters, using a supplement like Omega grandE helps ensure your horse maintains healthy vitamin E levels through changing seasons and forage availability. One serving of grandE contains 1,500mg of natural vitamin E, a safe amount for horses in all life stages. For horses in heavy work, or smaller equids, adjust the daily amount accordingly.

In fall and winter especially, when green grass vanishes and storage losses increase, adding grandE is one way to help your horse stay resilient, recover smoothly, and move comfortably.

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Vitamin E isn’t always the first thing horse owners think of, but once you know what it supports (muscles, nerves, immune health) it becomes clear why it deserves attention. As forage quality changes with the season, intentional supplementation becomes a ally in keeping your horse feeling strong, responsive, and ready for every stride.