If a player or NPC takes an Alchemist’s infused extract and never uses it does that mean the alchemist can never again use that extract slot? What if the Alchemist prepares all her extracts for the day as infused and they are all taken. This seems a bit harsh that a major class ability can be taken away so easily. This rule is implied in the description of the infusion discovery and confirmed in the chirurgeon ability. Is there a reason that an alchemist cannot choose to render an infused extract inert?