Can U Prescribe Any Good Multivitamin For My 8 Years

Can u prescribe any good multivitamin for my 8 years old son who is studying in one of the best academic school in India. My son is completely fit and fine but sometimes he fills tired in maintaining the academic pressure and physical activities in school and home. A good multivitamin that can support his mental and physical need beside regular healthy food is necessary. Please help.