This is an interview I did with Dr. Bryan Ardis which is quite informative about tobacco as medicine
From "Elixir de los Dioses" by Raimon Pla Buxó
On tobacco: Juan de Cardenas, a devotee of Monardes
“To seek to tell the virtues and greatness of this holy herb [tobacco], the ailments which can be cured by it, and have been, the evils from which it has saved thousands would be to go on to infinity...this precious herb is so general a human need not only for the sick but for the healthy.”