"i have experienced mild to moderate headaches relatively everyday, dry mouth, bad taste in my mouth after i have taken it, severe leg cramps and a loss of 28lbs in 3 months.  to off set the headaches and cramps i have increased my h2o intake to equal 1/2 of my body weight in oz.  yes, it is a struggle to drink that much however the long term benefits out weigh the temporary issues."