As it stands, the pill Coach makes is very costly -- if you burn those petals for ashes and don't craft that cut stone, you'd have more than enough items to make two healing salve which restores more HP.

In a practical situation, players might as well think "eh, why bother?", because flowers spawn butterflies, which is a good source for healing in it self. Why pluck the flower when you can get the wings for free and make muffins?

Moreover, the only situations one might be okay with plucking the flowers is early game in a pinch, or much later when you have bees. The recipe seems not fit into either of those situations: it is not efficient for late games, and requires a lot of work for early on.

Based on the above reasons, I find the pain pills recipe too impractical. I suggest several ways might make it more useful: change petals to butterfly wings, decrease the number of petals/wings dramatically, increase the number of pills crafted per run, use niter (which everyone has but never use early on) instead of stone.