Is there any harm taking 1 scoop of whey protien , one multivitamin, 1tab vitamin e 400ui, 1tab vitamin c 500mg together after weight training workout?

Seems OK: The above mention supplements are in common use and the amount you indicated is in safe range and so should be ok to use. Remember that supplements are meant to supplement and should not the primary source of your vitamins/proteins etc.. A well balanced diet with plenty of fruits/veggies should a better approach. Consult doc. Good luck.