M.A.S.S.™ Builder

• Supports Lean Muscle Development – Helps promote healthy muscle growth and conditioning in performance and working horses.

• Encourages Healthy Appetite – Contains fenugreek, traditionally used to help stimulate appetite and support healthy weight gain.

• Improves Feed Efficiency – Provides essential amino acids that help support protein utilization and muscle maintenance.

• Supports Healthy Body Condition – Helps horses maintain optimal weight and muscle tone during training, recovery, or periods of stress.

• Easy-to-Administer Liquid Formula – Convenient liquid supplement that can be top-dressed onto feed for simple daily use.

M.A.S.S. Builder Liquid is a muscle-support supplement formulated to help horses develop lean muscle mass while maintaining a healthy body condition. This multi-active strengthening system contains key nutrients such as lysine, threonine, and rice bran oil extract (gamma oryzanol), which work together to support muscle development and improve feed efficiency. The formula also includes fenugreek, a natural ingredient often used to encourage appetite and support healthy weight maintenance.

This supplement is designed for all classes of horses, including those in training, competition, recovery, or those that are difficult to keep in proper body condition. By providing targeted amino acids and supportive nutrients, M.A.S.S. Builder Liquid helps support muscle conditioning and overall performance without the use of steroids or prohibited substances. The liquid format mixes easily with daily feed, making it a convenient addition to a horse’s nutrition program.

Key Ingredients (per 1 fl oz):
L-Lysine – 2,000 mg
Gamma Oryzanol (Rice Bran Extract) – 1,500 mg
Threonine – 1,000 mg
Fenugreek – 20 mg

Other Ingredients:
Rice Bran Oil
Natural Fenugreek Flavoring
Powdered Sugar
Disodium Phosphate
Sodium Carboxymethylcellulose
Potassium Sorbate
Propylene Glycol
Distilled Water

Daily Feeding Guidelines

Shake well before use. Top dress 1 oz daily per 1,100 lb of body weight onto the horse’s feed.

Best Results

For optimal muscle development and conditioning, use consistently alongside regular exercise and a balanced feeding program.

General Guidelines

Feed during or after meals to support digestive comfort. Consult your veterinarian before adding any new supplement to your horse’s feeding routine.