What should I give 2.6 year old which Supplements/ vitamins Indian style? He always falls sick, catch cold every month twice.. I yet not started anything.. What should help him in immune, height and in brain development as compared to his age group he is below line in this all?

at this age it is normal for babies to fall sick, as they are newly exposed to the outside world. your baby comes in contact with other babies in school, which also leads to cold and cough and such. i have not used supplements for my kids, and will suggest you also try the natural way, by giving your baby more of fresh fruits and vegetables. include outdoor play time each day, if possible some time in the sunshine too. also, add healthy foods such as yogurt, daliya, raagin and such to the diet. eggs and chicken are also very good if you are giving non-veg. do not compare your baby to others, your baby may take more time than others in doing certain things, but that is completely natural :)