omega 3 is type of essential fatty acid
and being used in many medical condition and increase immunity also
but recent report say that as other medicine it has side effect on cardiac ,nervous system .
so it must be use in condition ,it really needed and under dr observation
mega 3 is multivitamin
tab and contain many vitamin that actually u may not need it
so if u r healthy and want to take tab for only supplement,
my advise is not to take any medicine at all.
still u want to take then take mega 3 ,not omega 3