Oh please!! If they work for you take them. I use Stacker 2's every day. They give me tons of energy, and just "help me along" with the calorie control. I still eat 3 good low carb meals a day, take all of my vitamins, including Lioness, (a libido booster) and I feel so great it should be a sin!! I am usually in a great mood, I wake up happy, and try to stay that way!! If you like them use them!!! lt was the supplements with ephedra in them that caused all of the hoopla about heart problems. I have even used them, and had no problems!! Do what you think is right, and if there are any doubts, ask a doctor.