Paracelsus adopted name of Theophrastus Bornbastus von Hohenheim (1493-1541) developed the idea that minerals and chemicals might have medical uses (iatrochemistry).
He introduced the use of the opiate laudanum (which he named) for painkilling purposes. Although Paracelsus was some thing of a charlatan, and his books contain much mystical nonsense, his rejection of the ancients and insistence on the value of experimentation make him an important figure in early science.
He lectured in Basel on the need for observational experience rather than traditional lore in medicine: he made a public bonfire of the works of his predecessors Avicenna and Galen.
Why is Paracelsus famous?
Paracelsus was a Swiss physician, alchemist, and scientist.