About this item Amino acids - are the building blocks of protein L-Tyrosine - is an amino acid that supports the production of brain neurotransmitters dopamine and norepinephrine. Freshness of ingredients - Because we manufacture our own products, our products go from tested raw material, to manufactured good, to bottled and packaged products immediately so you can be assured of product potency throughout its shelf life. Authenticity of ingredients - We always use a pure form of each ingredient and all our ingredients are laboratory tested to ensure accurate identification so you can be assured we use real, authentic ingredients. Responsibly made - Certified Glute Free, Vegetarian, Halal and Kosher, made with recyclable packaging the manufacturing of this product supports wind power. This product does not contain yeast, corn, wheat, soy, milk, preservatives or artificial colors, flavors or sweeteners.