If you are sensitive to stimulants, avoid taking within 4 hours before sleep. Ingredients: Caffeine,Chromium,L-Theanine,L-Tyrosine,Citrus Aurantium,Green Tea Extract,Kola Nut Extract,Cayenne Pepper,BioPerine Type of Diet: Vegetarian Features: Natural,Plant Based,Vegetarian Friendly When to Take: Before Workout.