According to a new U.S. study women who take higher doses of common, over-the-counter painkillers, such as Ibuprofen and even Tylenol, have higher blood pressure than women who do not. The study monitored two groups of women, who were followed for three to four years, to see which ones developed high blood pressure. It was found that only aspirin did not raise the risk of high blood pressure among the women.The researchers said their findings, support a growing list of research that suggests all painkillers, both prescription and non-prescription, have some health risks and should be used carefully.This list includes Acetaminophen or Paracetamol, sold by Johnson & Johnson under the brand name Tylenol.Dr. John Phillip Forman of Harvard Medical School and Brigham and Women’s Hospital in Boston, who led the study, says that women who took 500 milligrams or more of Acetaminophen per day, on average, were almost twice as likely to develop high blood pressure as women who did not use Acetaminophen.