I have been bodybuilding for five years now (I bench 250lb in sets of 4 -ALL DAY LONG ) I THINK EPHDRA & EPHRENDRINE- ( SYTHETIC DERIVATIVE)IS GETTING A BAD-RAP FROM DOCTORS WHO THINK EVERYONE & ANYONE IS USING IT IMPROPER. I HAVE USED IT OFF AND ON FOR THE LAST TWO YEARS / USING IT CORRECTLY AND GETTING GREAT RESULTS (FAR BETTER ON THE LIVER & BODY THAN CLENBUTERAL OR T3!) I THINK IF USED CORRECTLY IT'S A SAFE DIARETIC/BRONCHODILATOR (WHICH INCREASES BASIL METABOLISM ) YOU JUST HAVE TOO BE SAFE , AND DO THINGS IN MODERATION , JUST LIKE ANY DRUG! BE SAFE & BE HEALTHY , CHEESE