constipation
"So, the taste (doctor recommended the lemon flavor, but I'm feeling like I should have went with cherry instead) is similar to that of rancid vinegar.  As soon as I chugged the 10oz bottle I began feeling really sick to my stomach.  I even vomited.  After about 30 minutes to an hour I decided I had enough.  My stomach started churning and before I knew it I was running to the bathroom.  I stayed glued to the toilet seat for a good hour.  Basically rinse and repeat that for the duration of 5 or 6 hours.  The remainder of the medicine just leaves my stomach feeling terrible and noisy.  Good medicine, bad side-effects."