F9 Extreme gives you an explosive boost of energy which will enhance your stamina and make your workout sessions more productive as it contains ingredients such as Beta-Alanine and Betaine Anhydrous. F9 Extreme also contains Creatine Nitrate, Creatine HCl and Vitamin B Complex which increases muscle mass and improves your workout performance. F9 Extreme boosts your focus as it contains Acetyl ITyrosine and Caffeine which boosts mental alertness and helps you enhance the intensity of your workout. NOT FOR BEGINNERS: High Caffeine, High beta-alanine.