Due to amount of studies(exams & projects) i have to do, i usually find myself constantly waking overnight and during the day i am really exhausted. What multivitamins and supplements would you recommend to help me concentrate more during my studying hours and help reduce exhaustion. I checked a local pharmacy where i live and they recommend Biostrat, Brain Vita & Seven Seas Multi Spectrum. Which would you recommend and what other recommendations do you have in mind. Thanks.