ATP Science L-Citrulline Malate L-Citrulline is a non-essential amino acid that can convert to L-Arginine and then Nitric Oxide to dilate blood vessels. ATP Science’s L-Citrulline Malate supports muscle anti-fatigue, which promotes a smoother recovery. Features Supports anti-fatigue in muscles Can support circulation Uses 2:1 ratio Gluten-Free Non-GMO Benefits L-Citrulline is an amino acid found in your blood vesicles that can allow the wall of blood vessels to relax, supporting circulation. ATP Science’s L-Citrulline Malate can promote increased circulation, naturally inviting greater amounts of nutrients and oxygen to working muscles, which can improve strength while reducing muscle soreness after training. Citrulline can bypass digestion and first-pass metabolism to get into your peripheral tissues. This formula is made via fermentation from non-GMO watermelon seeds. The 2:1 ratio equates to 2-parts Citrulline and 1-part Malate, and this supplement is vegan-friendly, gluten-free, and sugar-free. Summary ATP Science’s L-Citrulline Malate has been HPLC verified and supports anti-fatigue within working muscles.