Clarithromycin
"Bitter taste in your month all way through! On the first day had a heart racing and high blood pressure so I had to call an ambulance! On a third day severe headache and worsening reflux. On a fifth day nausea lack of sleep vomitting funny feeling in my throat and chest suppose caused by reflux. I leaves you feel really week and sweaty but overall helped with my chest infection when everything else failed and my hope was lost. I also had vivid dreams didn't like that too."