Azithromycin
"Second time taking this medication.  The first for an upper respiratory infection this time a tooth infection.  First time I took the medicine I had the worst stomach pains and diarrhea. Read online that eating probiotic yogurt before you take the med no stomach pains will happen ...IT WORKS! Had no problem the rest of the week. 

This time my dentist prescribed for a tooth infection.  Well, I didn't realized it was the same devil medicine from before. Took the pill, ate waffle house, puked 1.5 hours later.  Took a nap. Stomach feels a little better but still a little queasy"