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What is Zesterra®?

Zesterra® is an all-natural supplement designed to support horses during times of stress, such as hauling, heavy training, foaling and during times of extreme heat or cold.

Zesterra® is safe for all classes of horses including lactating mares and foals.

Zesterra® stimulates appetite and water consumption safely and naturally by balancing the pH of the stomach. It can be used as a flavor enhancer for horses that reject water from new sources when being hauled to new destinations.


  • Horses with Active Ulcers or Symptoms: Give 1ml per 100 lbs of body weight orally
    in the AM and PM for 14 days and then reduce to 1ml/100 lbs once a day for 14 Days.
    Move to a .5ml/100 lbs daily maintenance thereafter. When these horses come under
    stress use 1ml/100 lbs prior to the event (riding, hauling, weather change,
    environment change).
  • Older Horses/Hard Keepers: Give 1ml/100 lbs orally for 10 days followed by
    0.5ml/100 lbs daily until desired weight is achieved. Once desired weight is achieved,
    give 1ml/100 lbs two to three times per week to maintain results.
  • Ulcer Prone Horses/Horses in Rigorous Training: Follow the same protocol as
    outlined above for Horses with Active Ulcers.
  • Respiratory Infections/Shipping Fever: Give 1ml/100 lbs orally daily until symptoms
    (cough, fever) subside. If antibiotics are prescribed, a daily dose of 1ml/100 lbs should
    be used for at least 10 days past the last dose of antibiotics.
  • Environmental Stress (Extreme Heat, Cold or Disease Outbreak): Give 1ml/100 lbs
    orally prior to changes in weather or disease outbreak.
  • Colic: Give 30ml – 50ml orally at the onset of colic. You may use up to 100mls. Please
    contact your veterinarian if colic persists.
  • Hauling: All horses should receive 1ml/100 lbs orally the day before leaving and every
    day while away from home.

What is in it?

Colloidal Silver, water, corn oil, guar gum, orange extract, onion extract, soybean oil, glycerin, vegetable-based fatty acids, natural apple flavoring



Equine Special with Zesterra®

Equine Special with Zesterra­­­® is a convenient way to make sure your horse is getting everything it needs to thrive. A special blend of high-quality, bio-available vitamins and minerals has been formulated for horses of all ages. This loose mineral is a great addition to your daily feeding regimen and ensures your horse is getting the added benefits of Zesterra® daily.

Even the best hay and forage can have “holes” in its nutrient content. Supplementing your horse daily with a balanced, carefully formulated vitamin and mineral blend can help fill in those deficiencies and give your horse everything they need to thrive. The addition of Zesterra® makes this mineral unique, in that it supports gut health and delivers acid-neutralizing properties — one of the keys in preventing gastric ulcers from developing.

Feeding Recommendations

• Feed 3 oz per day for an average-sized adult horse; can be top-dressed over grain or other feeds (30-day supply only; please see feeding instructions on bag for 50# bags).
• Make sure horses always have access to clean water and salt.

This product was made in a feed manufacturing facility that does not handle or store products containing animal proteins prohibited in ruminant feed.

Caution: Due to high Copper content, do not feed to sheep or other unapproved livestock.


Crude Protein (min) 15%
Lysine (min) 2.8%
Crude Fat (min) 2.0%
Calcium (min) 8.5%
Calcium (max) 9.5%
Phosphorus (min) 6%
Salt (min) 6%
Salt (max) 7%
Sodium (min) 2.8%
Sodium (max) 3.5%
Copper (min) 940 ppm
Selenium (min) 23 ppm
Zinc (min) 2,800 ppm
Vitamin A (min) 130,000 IU/lb
Vitamin D3 (min) 27,000 IU/lb
Vitamin E (min) 1,000 IU/lb
Biotin (min) 40 mg/lb


Monocalcium Phosphate, Soybean Meal, Plant Protein Products, Extruded Soybean Meal, Molasses Products Roughage Products, Calcium Carbonate, Salt, Magnesium Oxide, Lysine, Vegetable Oil, Iron Oxide, Glucose, Dextrose, Propionic Acid, Acetic Acid, Benzoic Acid, Sorbic Acid, Natural and Artificial Flavor Ingredients, Silicon Dioxide, Propylene Glycol, Colloidal Silver, Corn Oil, Guar Gum, Orange Peel Bitters, Onion Extract, Soybean Oil, Glycerin, And Natural Apple Flavoring, Sodium Bicarbonate, Vitamin A Supplement, Vitamin D3 Supplement, Vitamin E Supplement, Riboflavin, d-Pantothenic Acid, Niacin, Vitamin B12 Supplement, Menadione Sodium Bisulfite Complex (Source of Vitamin K), Thiamine Mononitrate, Folic Acid, Pyridoxine Hydrochloride, Potassium Chloride, Sodium Chloride, Magnesium Sulfate, Manganese Sulfate, Zinc Sulfate, Copper Sulfate, Ethylenediamine Dihydriodide, Cobalt Sulfate, Calcium Stearate, Biotin Supplement, Spices And Other Natural Seasonings and Flavorings, Zinc Hydroxychloride, Vitamin E Acetate Oil (dl-Alpha Tocopheryl Acetate), Manganese Hydroxychloride, Choline Chloride, Ascorbic Acid, Niacin Supplement, Sodium Selenite, Basic Copper Chloride, Selenium Yeast, Cobalt Carbonate, Processed Grain By-Products.