The smart pre workout FULL CHURN features L Theanine to help super CALM and FOCUSED energy throughout your workout! L theanine in your pre workout helps to enhance mental clarity, reduce stress, and balance Acetyl L Carnitine vs L Carnitine: 4 Key Differences Momentous Pure Encapsulations l Theanine L Theanine, Double Strength 200 mg Veg Capsules Functional roles of taurine, L theanine, L citrulline, and betaine during heat stress in poultry Journal of Animal Science and Biotechnology Springer Nature Link Acetyl L Carnitine