Levaquin Side Effects: levaquin intervenously for bladder infection in hospital blisteri http://www.medications.com/effect/view/38028 levaquin intervenously for bladder infection in hospital blistering rash on lips .out of hospital given avelox believe same family : blistering rash on lips between thighs and buttocks. went to dermatologist said allergic reaction to avelox. took blood test It's the fluoroquinolones family. Cipro is another very common d Wed, 14 Jan 2009 21:59:27 -0500 http://www.medications.com/effect/view/38028?item=15997 It's the fluoroquinolones family. Cipro is another very common drug in this family. Hope you feel better soon. Please file a medwatch report with the FDA. http://www.medications.com/effect/view/38028?item=15997