C
@jon-mitchell we've had some discussions about this, but it is (imo) highly unlikely that it is a known remedy (though it is hinted to be a possible remedy). In the first place, in order for it to be known as being able to alleviate the symptoms then someone with the devouring has to make it to the forest, in the right season, to chance upon a Trombe seed. Usually a commoner kid with the devouring will end up bed ridden until they die - kinda like Myne was before Urano - unless they have some serious funds and ties to nobles for the requisite magic tool, which would mean they have no reason to head to the forest in the first place. This could be a real breakthrough in the cultivation of Trombe however if they make the connection that it's (and again, this is an assumption) a mana devouring plant - and this would happen only if Lutz (or Myne if she ever sees how a Trombe usually grows and the results of its growth) will connect the dots and see that the Trombe that grew after Myne uncovered its seed didn't leave such devastating side effects (plus grew a lot quicker) - or at least I remember this being said in passing in the book.
