Thanks for the suggestions and clarifications!
I think for now I will allow "magic" healing to work as normal. Still, I think I won't allow it to counteract the loss of consciousness caused by Agony.
Perhaps the unconsciousness could be alleviated by a specialized Tonic, the Holy Vigor miracle, or ...

Hello all,
I've been running the game occasionally for a few years now but just recently started a more consistent game and I came across an interesting question:
"If character is in the Agony Condition, is a First Aid or Medicine roll the only way to save them? How does Agony interact with Tonics ...