Alchemist

Alchemists tend to have a loose association rather than formal guilds. They operate in secrecy and only take on the most trusted as apprentices to share their knowledge. Larger cities with a status quo and lacking the frontier chaos near active adventure locations, settle into more sedate endeavors and develop formal guilds.
Near active adventure locations, their money maker is their version of a Healing Elixir. Any alchemist foolish enough to sell a fake is either run out on a rail or dead. Charlatans, i.e. utter frauds, are often dealt with indirectly by more unsavory means as it takes away business.