Last October I took some homeopathic cough medicine I d never tried before as I had a bad flu/cough and went to sleep. In the middle of the night I awoke on all fours in bed, heart pounding and dry heaving. I vomited a little and it passed. I threw away the cough syrup and figured it was a reaction. However, since this time (6 months now) I am awakened with the same symptoms (though not as severe). This happens as frequently as once per week or as little as once per month. I occurred last night and it s always the same: suddenly awake, heart pounding ready to vomit and then it goes away. It s alarming and if connected to the syrup, makes no sense. Any ideas? (age 43, female, healthy)