Here's a list of products for the brain power:
Tonic Brain, a powerful combination of caffeine, alpha-amylase inhibitor, omega-3 fatty acid, and antioxidants to combat inflammation. I've used this for years, and it's still very effective. The combination of the alpha-amylase inhibitor and omega-3 fatty acid helps the brain process dopamine better. The caffeine helps the body's system respond better to these brain chemicals. This is a daily supplement, and it's very popular. Vitamin B12, another brain power supplement. I'm not a scientist, but I've heard this works to fight cognitive decline. This can also help with mood and sleep problems. Vitamin B6, for example, is very common, and has shown to improve mental performance. Biotin helps to keep the neurons alive in the brain. Some studies have shown that it improves brain function. And vitamin E helps to keep cell membranes and other cellular functions alive. If you need to buy supplements for more brain power, these are the ones I recommend.
The first step is to get to know yourself. If you know you have a high energy level and high mental alertness, then go to your doctor and ask for more B6. Or, if you need B6 for other reasons, make sure to get it from your diet, especially fruits, veggies, eggs, meat and fish.