

Stella Hagelstam recommends Mega Base Junior for young horses
“Especially when a foal is growing rapidly, this product is beneficial in helping prevent developmental growth disorders and supporting normal skeletal development. It is particularly useful for supporting the growth and development of sport horses. In our stable, Mega Base minerals are also used for adult and competing horses.”
— Stella Hagelstam
Equistro Mega Base Junior
Product Description
Equistro Mega Base Junior – Supporting Growth and Development
Equistro Mega Base Junior is a liquid complementary feed
specially developed for suckling foals, weanlings, and young horses.
It provides essential minerals, trace elements, and vitamins in optimal
proportions to support the healthy development of the musculoskeletal system.
Nutritional Composition and Ingredients
The mineral and trace element content is designed to support the most intensive growth phase.

Why Choose
Key Benefits of the Product
1. Supports bone development: Contains calcium, phosphorus, and magnesium in the correct ratio (Ca:P ratio 2:1).
2. High bioavailability: The liquid form and high-quality trace element compounds (such as zinc chelate) ensure excellent absorption and utilization.
3. Comprehensive vitamin composition: Contains vitamins A, D3, and E as well as essential B-group vitamins.
4. Versatile use: Can be administered directly into the mouth or mixed with feed.
Applications
Equistro Mega Base Junior is a liquid complementary feed specially developed for suckling foals, weanlings, and young horses. It provides essential minerals, trace elements, and vitamins in optimal proportions to support the healthy development of the musculoskeletal system.
Product Information and Composition
The mineral and trace element content is designed to support the most intensive growth phase.
Calcium(Ca) 11 %, Phosphorus(P) 5,5 %, Magnesium (Mg) 0,9 %, Ash 37 %, Water 48%
Key additives (per kg):
Zinc: 550 mg
Manganese: 275 mg
Copper: 210 mg
Selenium (organic): 19 mg
Vitamin A: 10,000 IU
Vitamin D3: 1,520 IU
Vitamin E: 760 IU
Dosage Instructions
Dosage depends on the horse’s age and breed size.
Warmbloods and large breeds (approx. 500 kg adult weight)
Broodmares: Before foaling (when the udder begins to fill) 20–40 ml daily
Foals (4–7 weeks): 20 ml twice per week
Foals (8–11 weeks): 20 ml three times per week
Young horses (12 weeks →): 20–40 ml daily
Smaller breeds
Medium-sized breeds (e.g. Haflinger, Appaloosa): ½ of the above doses
Small breeds (e.g. Icelandic horse, Shetland pony): ¼ of the above doses
Important note: Due to the high trace element content, the daily dose must not exceed 40 ml per 100 kg body weight.
With a 20 ml dose, one bottle provides 50 servings.
Practical Tip
Mega Base Junior can be conveniently administered with a dosing syringe directly into the foal’s mouth if it does not yet consume significant amounts of concentrate feed. This ensures the foal receives all necessary nutrients even before weaning.
Frequently Asked Questions
At what age can Mega Base Junior be given to foals?
Supplementation can begin at 4 weeks of age. Initially, the product is given twice per week, with frequency increasing as the foal grows.
Why is a liquid form better for foals?
Suckling foals often consume only small amounts of concentrate feed, which makes it difficult to administer powdered minerals. The liquid form is easy to administer directly into the mouth and is quickly absorbed.
Can the product be given to pregnant mares?
Yes. It is even recommended to give the product shortly before foaling (when the udder begins to fill) to ensure the mare’s body and colostrum are in optimal condition for the foal’s birth.
Does this product replace other mineral supplements?
Mega Base Junior is a complementary feed. If the young horse already consumes large amounts of commercial growth feed, the total mineral intake should be checked to avoid exceeding upper limits of trace elements (especially selenium).
How should the product be stored?
Store in a cool place protected from light. Close the cap carefully and shake the bottle before each use.

Stella Hagelstam recommends Mega Base Junior for young horses
“Especially when a foal is growing rapidly, this product is beneficial in helping prevent developmental growth disorders and supporting normal skeletal development. It is particularly useful for supporting the growth and development of sport horses. In our stable, Mega Base minerals are also used for adult and competing horses.”
— Stella Hagelstam