"i have been on it about 2 years . i think just when it came out i started it. i honestly can&#039;t tell if it&#039;s working but when i don&#039;t take it i am agitated. i mean if i forgot . i&#039;d rather not be on drugs because of all the bad side effects but who knows whats happening with all these pills to our bodies . i just hope 20 years down the road they don&#039;t find out this stuff was bad"