I like the fact this manga seems to place itself more on the realisim side then the fantasy side. But I do kind of wish for the MC to have some magical OP powers to make such a wide variety of medicine. That'd be an interesting manga idea. Where someone takes the realistic part of medicine making. But have it be influenced by magical elements. So something like
" Oh well I need a tell of newt since the chemical excreted when by itself has a positive reaction when combined with the citric acid of an orange, together allowing for a cure of scars or blemishes"