The Onnit Flow blend is made up of l.tyrosine and l.theanine. It also contains oat straw extract and phosphatidylserine. This compound is associated with better memory. Next, there's the Onnit Focus blend, which provides Alpha-GPC. This is a huge plus. It also contains bacopa, toothed clubmoss and bacopa, which are both botanicals that protect brain cells against harmful natural substances. The Onnit Fuel Blend includes l-leucine and pterostilbene as well as vitamin B6. L-leucine, an essential amino acid, is used in protein biosynthesis. It is believed to help in controlling blood sugar levels and the growth of muscle and lean body weight. Pterostilbene, meanwhile, is thought to be an antioxidant and anticarcinogenic that provides additional protection for your brain.