Common antibiotics linked to miscarriage risk

A significant number of common antibiotics may be linked to an increased risk for miscarriage in early pregnancy, Canadian researchers warn.

Their large, case–control study found the following antibiotics and antibiotic classes were associated with significantly increased risk for spontaneous abortion before 20 weeks’ gestation: azithromycin, clarithromycin, tetracyclines, doxycycline, minocycline, quinolones, ciprofloxacin, norfloxacin, levofloxacin, sulfonamides and metronidazole.

The authors report most of these drugs were associated with a near twofold increase in risk after