Called Nathans Natural about Levodyn and unable to find out who manufactured it and where it is manufactured it. Unable to get a number for Nathans Natural Home Office or Levodyn, the company who is supposedly to be in NY. There is no listing in the state or city of NY. In fact, there is no listing in Mi. They take credit cards, so someone had to check them out or should have checked them out.WHY ARE THEY SO SECRETIVE?