The Artificer gets a healing draught that he can hold out for an hour before it loses its healing properties. He technically gets an infinite amount of them, but a person can only drink 1/ long rest. Would the alchemist feat that allows you to maximize the healing of a potion also apply to this? my guess would be it is up to interpretation but i'm not sure.
The Alchemist feat does not apply the Artificer's healing draught.
The Alchemist feats says:
Over the course of any short rest, you can temporarily improve the potency of one potion of healing...
It only works with the specifically named potion of healing magic item, which the Artificer's healing draught is not.