It got its name though from Dr. Maria Treben is credited with rediscovering the remedy after World War II. Phillipus Paracelsus, a 16th century Swiss Physician. Swedish Bitters is said to be the long life elixir, and is said to improve regularity, rejuvenate vital organs, cleanse the body, and aid digestion. Claus Samst, a Swedish Physician who practiced medicine in the 1800s and used the remedy for many of his patients. It was first formulated 500 years ago by Dr. Swedish Bitters is an old European herbal remedy made famous by herbalist Maria Treben.