Day 2 (took double dose yesterday, single dose today) -- have developed pretty constant diarrhea and stomach cramps. This week has sucked. I have suspected strep, fever, bronchitis and some kind of flu? I just spoke with my doctor who says that it can't be the drug since it's only the second day. Well, your comments here and other web research offers a different opinion. The doc is blaming in on my flu, but I didn't have any stomach distress at all until now. I'm hypothyroid, hypoglycemic and very sensitive to medication. The last thing I need is to have to deal with diarrhea. It sucks because my sore throat has improved, and so has my breathing, but I get dizzy when loosing fluids, no matter how fast I replenish. Female, age 35.