These begin with the Onnit Flow Blend, made up of l-tyrosine, l-theanine, oat straw extract, and phosphatidylserine, a compound associated with improved memory. Then there is the Onnit Focus Blend, which gives you Alpha-GPC, a massive plus, alongside bacopa and toothed clubmoss, a botanical thought to protect brain cells from harmful natural substances. Finally, we have the Onnit Fuel Blend, including l-leucine, pterostilbene and vitamin B6. L-leucine is an essential amino acid used in protein biosynthesis. It is thought to aid in blood sugar level control as well as the growth of new muscle and lean body mass. Pterostilbene meanwhile is thought to be a potent antioxidant and anticarcinogenic, providing additional protection to your brain.