Thalidomide was introduced as a sedative drug in the late 1950s and typically used to cure morning sickness. In 1961, it was withdrawn due to teratogenicity and neuropathy. There is now a growing clinical interest in thalidomide, and it is introduced as an immunomodulatory agent used primarily, combined with dexamethasone, to treat multiple myeloma. The drug is a potent teratogen in zebrafish, chickens, rabbits and primates including humans: severe birth defects may result if the drug is taken during pregnancy. Thalidomide was sold in a number of countries across the world from 1957 until 1961 when it was withdrawn from the market after being found to be a cause of birth defects in what has been called "one of the biggest medical tragedies of modern times"...