Field Medicine

30% increased Life Recovery from Flasks
Life Flasks gain a Charge when you hit an Enemy, no more than once each second [1]

Field Medicine was a notable passive skill.

Anointment

Blight anointment to unlock the passive:

Oil #1	Oil #2	Oil #3	Outcome
Indigo Oil	Crimson Oil	Black Oil	Field Medicine	30% increased Life Recovery from Flasks Life Flasks gain a Charge when you hit an Enemy, no more than once each second

Version	Changes
3.16.0	Removed from the game. Aqueous Accelerant on existing items has been replaced by Field Medicine.
3.8.0	Introduced to the game as Aqueous Accelerant.