a friend of mine has just started clen for the first time and is having awesome results, lost like 7lbs a week for the last 2 weeks. I'm thinking about doing it however I have a concern that every once in a while I get plapatations, the dr. has said they are benign, but I am still worried. Will doing clen be dangerous if you have palpatations? I've done ephedrine before and my friend said it makes you jumpy like that times 10. Any thoughts?