Took Avelox for pharyngisis 3 wks ago but then went to take l for...

Took Avelox for pharyngisis 3 wks ago but then went to take l for some dental surgery night 11 March 08 and within one hour hands and feet burned and itched, then left side heat started swelling, lips swelled, and then breathing cut off and kept blacking out and coult not talk. Called 911 and spent most night there on oxygen and IV's/shots. Do not know if it contracdicted Lasix which I'm on or what as the lst time I took it only rapid heartbeat.