As a nurse, someone asked me if I thought an advertisement on tv for a weight loss supplement worked? My answer was "YES it works if you follow the directions." I went on to explain my answer in that on the bottle of every weight loss supplement out there it says "when combined with a sensible diet and exercise program." There is the part of what they are advertising that works. A SENSIBLE DIET AND EXERCISE program is the only way to lose weight. They have us all duped. It amazes me that these companies can sell herbal supplements that can raise your heart rate, give you a stroke or heart attack and put you in a persistent vegetative state for the rest of your life without FDA regulation, but a dog treat or food has to be approved by them. Maybe we should all just become dogs!! We could blame our owners for all the snacks we get and for the lack of exercise. What a life, a dog's life!! Just kidding, but seriously, as a nurse this is upsetting. Any of these drugs that raise your metabolism, in general raise your heart rate. You may or may not be able to handle this depending on your condition. Many of us do not know we have high blood pressure. If you want to take a supplement, take a multivitamin, follow a sensible weight loss plan that includes all food groups and increase your exercise. Have a great life. Happy Weight Loss Journey.