Ginkgo is one of a few herbs which stimulate the brain primarily by increasing blood flow to the brain. Researchers looked at the effect of melatonin on seizures in rats when the melatonin was given before the seizures. It is not found in many multivitamin ReMind Solutions, but if you can find it, you're golden. Vinpocetine has a lot of effects with variable importance on increasing attention span, memory, and concentration..
https://primalhealthtips.com/remind-solution/