Paracelsus' Medicine Bag

Origin
Paracelsus was a late 14th century/ early 15th century scientist, physician, alchemist and occultist. Widely known as the 'father of toxicology', he invented both poisons and their antidotes.

For the Warehouse, he was infamously known (and redacted) from Warehouse files for being the caretaker of Warehouse 9. He dangerously experimented with artifacts, such as the Philosopher’s Stone, which led to the Regents bronzing him because he had effectively become immortal. He was revived five hundred years later by his also immortal brother’s family, the Count of St. Germain, and wreaked havoc on Warehouse 13. He successfully altered the timeline and events for five incarnations of the Warehouse until agents successfully returned events to their proper course.

Effects
The medicine bag is a brown leather pouch, with occult writings on the inside and has intricate spiral patterns on the outside. A leather strap allows you to wear it around the neck. Any liquid put in the bag (whether in a can, bottle or glass) turns into an unknown but highly deadly poison. When that same poison is put in the bag, it becomes the antidote.