Best Horse Weight Building Supplements Under $100 (2026)
We ranked products under $100 by a value score combining guaranteed analysis (calories, protein, fat), presence of performance amino acids, delivery form, and average user ratings
This roundup covers horse weight-building supplements under $100 chosen for measurable nutritional value, ingredient transparency, and user-rated effectiveness. Picks were selected by comparing formulation (calories, protein, fat, key amino acids), delivery form, and average user ratings to highlight practical value for equine weight and muscle support
Top Picks
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1
Formula 707 Weight Gain Crumble for Equines
Palatable, calorie-rich supplement to support weight and energy in hard-to-keep and senior horses. Customers note effective weight maintenance and palatability, with praise for quality
- calorie-rich formula
- palatable crumble
- supports weight and energy
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2
Formula 707 MuscleMx Equine Supplement – Conditioning & Muscle Builder
Equine supplement that supports conditioning and muscle mass with amino acids and energy aids. Key benefit: supports muscle-building metabolism. Customer insight notes mixed/none previously observed
- lysine for muscle proteins
- gamma oryzanol for weight gain
- okg for metabolic support
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3
Body Builder 4000 Horse Weight Gain Supplement
High fat and energy horse weight builder with body conditioning vitamins. promotes weight gain and muscle recovery with improved hoof quality; suitable for lactating mares to maintain body weight. Noted for shiny coat and growth support
- 40% fat content
- 26% protein content
- designed for weight gain and muscle building
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4
UltraCruz Equine Weight Gain 1 Gallon
Equine weight gain supplement in a 1 gallon container. Helps support weight gain in horses. Customer note mentions its use for weight management
- weight gain support
- 1 gallon container
- horse-specific supplement