I had a HORRIBLE epic that spanned 2-3 years of unknown gastro problems. I blame Kombucha 100% for rotting my insides. A cup every now and then is ok but if you drink it daily (like I did) in large doses (like I did) and make your own (which I tried to save money) you'll soon realize it's essentially VINEGAR. I wont get into the specifics but stay away from this stuff at all cost. Try some cashew yogurt or other pro-biotic foods. Long term Kombucha drinkers tread lightly.