My sister in law started taking Lean EFX about a month ago and yesterday I got a bottle too. I took my first pill this morning, and it seems to be working great. I have been researching for a while though and I am now concerned about death, heart attacks, and strokes. I am 23 years old, 186 pounds, 5'9" tall, have no medical conditions, and take no medications. I would like to continut to take it, and just call my doctor if I have problems, but I do not want to have anything severe happen to me without any side effects first. Can I take this medicine if I am aware and watch out for harmful side effects or could something severe happen without me having any problems first?