1 Pouch (30 Servings)
Take your training performance to the next level.
XS™ Pre-Workout Boost supplement utilizes science-based ingredients including clinical doses of L-citrulline and beta alanine to ensure you are getting the best from every serving and maximizing your training performance.†

Beta Alanine
Contains 4g of CarnoSyn®** Beta Alanine to boost training performance by supporting anaerobic exercise, muscle endurance and strength training performance.†*
L-Citrulline
Includes 3.4g of L-Citrulline to support the production of nitric oxide and support healthy blood flow during exercise to help deliver more oxygen and nutrients to your muscles.†
Caffeine + Rhodiola Rosea
Contains 115mg of natural caffeine, equivalent to a cup of coffee, and 100mg of Rhodiola Rosea shown to increase alertness, improve focus and mental stamina, reduce fatigue and increase energy during exercise.†
Muscle Multiplier*† Essential Amino Acids
Infused with 1g of XS Muscle Multiplier*† amino acid blend to kick start your essential amino acid supplementation.
B-Vitamins
Includes the same mega dose of B-Vitamins as XS Energy Drinks, to support your energy production from food.†
 
Who it’s for:
Men and women who want to improve their strength and muscular endurance or athletic training performance.
 
Advisories:
May cause flushing and/or tingling. Contains 115 mg of caffeine per serving. Children under 12 years of age, pregnant women or nursing mothers, or anyone with a medical condition, should consult with a physician before using this product.