In a new study researchers have established the link between one of the most commonly prescribed class of antibiotics and heart problems. In a study published in the Journal of the American College of Cardiology researchers found that current users of fluoroquinolone antibiotics such as Ciprofloxacin or Cipro face a 2.4 times greater risk of developing aortic and mitral regurgitation where the blood back flows into the heart compared to patients who take amoxicillin a different type of antibiotic. The greatest risk is within 30 days of use. Some physicians favour fluoroquinolones over other antibiotics for their broad spectrum of antibacterial activity and high oral absorption