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Thia-Cal™ is a daily thiamine (vitamin B1) and magnesium supplement that helps maintain calmness and promotes healthy nerves in your horse. Thia-Cal™ is balanced with calcium and other electrolytes in liquid or powder form that is palatable and safe for your horse. Thia-Cal™ is ideal for performance horses as it does not contain ingredients like tryptophan, valerian root, or kava kava.


Nervousness, restlessness, and hyperexcitability can be common behavior challenges for horse owners. There are many reasons why a horse may be exhibiting nervousness, vitamin and mineral deficiencies are one possible cause. Thiamine (Vitamin B1) and Magnesium are both essential nutrients that are known for their role in mood regulation and maintaining a healthy nervous system. Fortifying your horse’s diet with these nutrients supports balanced behavior, promotes relaxation, and healthy nerves in your horse.

Thia-Cal has the following benefits for your horse:

  • Provides the extra nutrition horses may need during times of stress or when the horse is eating poorly
  • Will not make your horse drowsy
  • Helps conserve energy while calming and setting your horse
  • Promotes a sense of relaxation and mental alertness
  • Can be added to the feed daily



Liquid: For a 1000 lb horse, top-dress two fluid ounces on feed daily for 8 days. Give one fluid ounce daily thereafter.

Powder: For a 1000 lb. horse, top-dress 2 scoops on feed daily for 8 days. Top dress 1 scoop daily thereafter.


Additional information


1 Quart (32 day supply at fl oz/day), 1 Gallon (128 day supply at 1 fl oz/day), 1.54 LBS (30 day supply at 1/scoop), 6.15 LBS (120 day supply at 1/scoop)


2 reviews for Thia-Cal™

  1. Linda Kern

    I have not had the need to use this product, but watched it do an AMAZING transformation on a horse that went from being part of a herd to having to live in a solitary situation. He as “crazy” and constantly fretting (not always whinnying, but pacing and anxious). I recommended Thia-Cal to my friend and the change in Tucker was very noticeable within four days. She has had him on it ever sense since by nature he is a fear based, nervous horse. They are doing beautifully together now and Tucker seems happy and content with his horse/human herd. It is good to know that it is available if I would ever need it. I have recommended this product to several other people as well.

  2. Anonymous

    takes the edge off , but not the performance

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