A portrait of Paracelsus (Philippus Theophrastus Aureolus Bombastus von Hohenheim). Paracelsus (1493-1541), was an alchemist, physician, astrologer, and reformer of therapeutics. He pioneered the use of chemicals and minerals in medicine, was the first to used the word zinc for the element zinc, is sometimes called the father of toxicology and is credited as providing the first clinical/scientific mention of the unconscious.
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