Mercurius
Legend
This only makes sense if you translate HP as "wounds," but they're not - at least not mostly. They're an abstraction that mostly represents bodily fortitude. This has always been the case, but more so in the last two editions with healing surges and HD. If they were "wounds" then they wouldn't heal via HD, which in turn replenish after a long rest.It heals wounds anywhere on your body well before it could ever have a chance to be assimilated by the body, so it cannot be anything as mundane as something that needs to be digested and instead needs to be a supply of healing magic that is triggered by consuming it. The form is the least of it, imbuing it with magic is the important part.
On the other hand, plentiful healing also facilitates a deadlier game - as the DM, you don't have to worry as much about overwhelming your PCs.Well, from another thread I have it on repeated authority that "gold is worthless", so I guess they are free.
But seriously, from a DM perspective I need it pricey enough that characters aren't going into every combat fully healed, like the old Wand of Cure Light Wounds trick from D&D 3.5. And cheap enough that a party will have a few so that non-healers can stand others up.