http://www.medications.com/effect/view/38930 Doctor prescribed 500mg 1x day for Upper Respiratory Infection. I took it the first 7 days. I experienced insomnia, anxiety, loss of taste and smell and loss of appetite. After a meal, food just sat there and bloated my stomach for 10 hours. I also was Fri, 13 Feb 2009 17:38:20 -0500 http://www.medications.com/effect/view/38930?item=17053 That was nice to read. My only hope at this point is that the tales of my bad experience (very bad) will help someone else avoid a similar experience. We must tell everyone possible. This stuff is poison. http://www.medications.com/effect/view/38930?item=17053