do dietary supplements work really work i need real answers?!

They do work, but the benefits are not felt only after a few days or weeks. They should be taken daily, if you know that you have a deficiency; if you don't have a deficiency then you will not notice any effect

your question is a bit too broad...

SOME do and SOME dont.. there are many dietary supplements...
and even the same supplement can 'work' when made by one brand and 'not work' when made by another brand...

if not why do they make them ?
for money of course :) everyone wants a dollar

if they dont work why isnt it illegal to sell false products
well the industry isnt regulated well enough in my opinion. There was a story on a current affair a few months back about MULTI VITAMINS ! and how they can cause breast cancer in women and prostrate cancer in men !! and how they are useless for your well being.. yet i still see them on the shelves ? I guess its because there is not enough research backing up their claims...