what vitamin is good to take while reviewing and prior taking an exam?

Answer 1

sleep and healthful food. vitamins take a while to kick in.

Answer 2

It is important to get the mineral potassium. This is because your sodium potassium pump is responsible for sending nerve signals to your brain, so when you study you need this potassium so that you can efficiently learn ,etc. I always would eat bananas, it actually helps. That's why sometimes you feel exhausted after studying or taking a long exam. A multi-vitamin is good to take once a day, taking it off schedule really won't make a difference, it's more a thing that will help you in the long run not necessarily right away.