12 (12 g/.04 oz) Stick Packs
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 performanc