<prompt> All of the following antibiotics can be used to treat cystitis in pregnancy except ___Amoxycillin1st generation CephalosporinsCiprofloxacin3rd generation Cephalosporins  <response>: Ciprofloxacin, a Fluroquinolone antibiotic, is contraindicated in pregnancy as it causes cailage and bone defects in the fetus. Antibiotics safe in pregnancy include Penicillin group, Cephalosporins, Erythromycin, Metronidazole except in 1st trimester Antibiotics unsafe in pregnancy: Metronidazole in first trimester, Chloramphenicol, Aminoglycoside, Tetracycline and Fluroquinolones. Ref: ncb.nlm.nih.gov 