Concerned!!!

Hi everyone
Im on day 4 of my cleanse and I am feeling pretty good. I was talking to a friend and she did another type of cleanse and she had to get rushed to the hospital because the toxins were backing up inside of her body and making her sick. She was on the wild rose cleanse. Is this lemondade cleanse safe?? I dont want to end up in the hospital or anything. I am a worrier and hope that it is totally safe. Other people that ive been talking to say that Im not gettin the proper nutrients and vitamins and thats not good for me and docotors wouldnt recommend it. Please help to make me feel better about this cleanse!!! Thanks