To my knowledge it has not been approved by FDA for weight loss
. It could cause one to go hypER, increasing heart rate, etc to dangerous levels.
Just remember - what works for one, may not work for everyone. For myself, right now, I'd love to be able to get rid of this 30 pounds, but I feel so much better than I did, I'll just be happy with being able to get out of bed in the morning for now. Right now, I'm concentrating on feeling the same 2 days in a row.