"i just started taking this antibiotic- 100mg twice per day. the side effects are crazy intense! i took it without food and within 20 minutes was severely vomiting, very tired,  out of it and confused. i went to the er and they told me to just take it again with food. so i did, and no vomiting or stomach cramps this time but still feel tired and kind of out of it. hopefully my body can get used to this......"