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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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Description
Ultium Growth Horse Formula 50lbsPurina Ultium Growth Horse Formula was conceptualized after the Purina new product development team completed their successful launch of the original Ultium Competition Horse Formula. The Ph. D. nutritionists at the Purina Equine Research Unit in Gray Summit, Missouri knew the advantages of feeding meticulously formulated, higher fat and fiber feeds to competitive athletes. But could the same principles be applied for young growing horses? Since then,
Purina® Ultium® Growth Horse Formula was conceptualized after the Purina new product development team completed their successful launch of the original Ultium® Competition Horse Formula. The Ph.D. nutritionists at the Purina Equine Research Unit in Gray Summit, Missouri knew the advantages of feeding meticulously formulated, higher fat and fiber feeds to competitive athletes. But could the same principles be applied for young growing horses?
Since then, research spanning over four years was performed to develop a new feed formulated specifically for young growing athletes. Purina performed detailed scientific feeding trials on broodmares and young horses from multiple foal crops at varying ages, breeds and management situations. The research involved monitoring and measuring growth curves, body condition, joint health, activity levels, blood work and more to ensure optimal nutrient delivery to broodmares and growing horses.
The result was unique, industry-leading nutrition proven to support the development, growth and adaptive physiology necessary to produce a strong, healthy athletic horse. It’s another offering of advanced nutrition worthy of the Purina name. Purina® Ultium® Growth Horse Formula. It’s What It Takes®.
NEEDS OF BROODMARES & GROWING HORSES
MARE IN FOAL
Ultium® Growth Horse Formula contains a concentrated calorie delivery system that supports the mare through all stages of gestation, with more total calories from added fat and fiber and lower sugar and starch. Lower feeding rates help support digestive health during this essential time.
Your foal’s best start begins with proper fetal development. Ultium® Growth Horse Formula provides research-determined amounts of nutrients, including copper and zinc for developing fetal liver stores to set the foundation for correct growth.
LACTATION/SUCKLING FOAL
Suckling foals may nurse up to 80 times per day. Ultium® Growth Horse Formula provides additional milk components to support immune function, calorie, and nutrient transfers to active, growing foals.
Lactating mares can require over 35,000 kcal/day to produce adequate milk and maintain body condition. The concentrated calorie delivery system of Ultium® Growth Horse Formula provides the necessary calories during this critical period for both mare and foal sustenance.
WEANLING/YEARLING
Ultium® Growth Horse Formula helps support strong bone development by using high-quality nutrient sources. Amino acids, vitamins and minerals are supplied in optimal amounts and ratios as determined by research studies to provide the necessary building blocks for bone growth.
Young growing horses need carefully-balanced nutrition for optimal muscle development to grow into successful athletes. The protein quality and amino acid fortification of Ultium® Growth Horse Formula supports in the foundation, maturation and maintenance of healthy muscle.
Since then, research spanning over four years was performed to develop a new feed formulated specifically for young growing athletes. Purina performed detailed scientific feeding trials on broodmares and young horses from multiple foal crops at varying ages, breeds and management situations. The research involved monitoring and measuring growth curves, body condition, joint health, activity levels, blood work and more to ensure optimal nutrient delivery to broodmares and growing horses.
The result was unique, industry-leading nutrition proven to support the development, growth and adaptive physiology necessary to produce a strong, healthy athletic horse. It’s another offering of advanced nutrition worthy of the Purina name. Purina® Ultium® Growth Horse Formula. It’s What It Takes®.
NEEDS OF BROODMARES & GROWING HORSES
MARE IN FOAL
Ultium® Growth Horse Formula contains a concentrated calorie delivery system that supports the mare through all stages of gestation, with more total calories from added fat and fiber and lower sugar and starch. Lower feeding rates help support digestive health during this essential time.
Your foal’s best start begins with proper fetal development. Ultium® Growth Horse Formula provides research-determined amounts of nutrients, including copper and zinc for developing fetal liver stores to set the foundation for correct growth.
LACTATION/SUCKLING FOAL
Suckling foals may nurse up to 80 times per day. Ultium® Growth Horse Formula provides additional milk components to support immune function, calorie, and nutrient transfers to active, growing foals.
Lactating mares can require over 35,000 kcal/day to produce adequate milk and maintain body condition. The concentrated calorie delivery system of Ultium® Growth Horse Formula provides the necessary calories during this critical period for both mare and foal sustenance.
WEANLING/YEARLING
Ultium® Growth Horse Formula helps support strong bone development by using high-quality nutrient sources. Amino acids, vitamins and minerals are supplied in optimal amounts and ratios as determined by research studies to provide the necessary building blocks for bone growth.
Young growing horses need carefully-balanced nutrition for optimal muscle development to grow into successful athletes. The protein quality and amino acid fortification of Ultium® Growth Horse Formula supports in the foundation, maturation and maintenance of healthy muscle.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.7 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 1
Terrible taste, great brand
Flavor Name: Berry, Size: 30 Servings (8.0 Ounce) (Pack of 1)
Thorne is a phenomenal company and the only supplements I trust. The reason I rated this so low is the absolutely disgusting flavor. Do yourself a favor and try another option
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
★★★★★ 4
Flavor is a problem
Flavor Name: Berry, Size: 30 Servings (8.0 Ounce) (Pack of 1)
The flavor ……it’s tough. It’s like drinking a sweet TART. Emphasis on tart. No better way to describe . Can’t get past the flavor to make other comments .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
★★★★★ 5
Trusted company
Flavor Name: Berry, Size: 30 Servings (8.0 Ounce) (Pack of 1)
Great product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 5
Great for recovery
Flavor Name: Berry, Size: 30 Servings (8.0 Ounce) (Pack of 1)
Really helps with post work out recovery. I feel noticeably less sore when I take this after a workout. Definitely prefer the lemon flavor over the berry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 3
Great formula, but desperate for an unflavored option
Flavor Name: Berry, Size: 30 Servings (8.0 Ounce) (Pack of 1)
I’ve been incorporating Thorne’s Amino Complex into my daily stack, and from a nutritional standpoint, it’s hard to beat. The clinical dosing of essential amino acids is exactly what I’m looking for to support my recovery and fitness goals. Thorne is usually my go-to for purity and quality, and this product is no exception when it comes to the actual ingredients.
However, the flavor profile is a significant drawback. To be blunt: the flavors are just not good. They feel chemically and overly sweet, which makes it a chore to drink rather than a supplement I look forward to.
I would much prefer an unflavored and unsweetened version. Having the option to just mix the raw powders into water or my own beverage without the unnecessary flavorings and sweeteners would be a game-changer. If you’re sensitive to artificial tastes or just prefer a "cleaner" experience, the current options might be a struggle.
Pros:
High-quality amino acid profile.
Trusted brand with great sourcing.
Cons:
Flavors are unpleasant and too sweet.
No "naked" or unflavored option available.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
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