It would be worth big pharma looking further into. I fear however they'll identify that blood serum levels of an ingested drug are variable enough as it is due

It would be worth big pharma looking further into. I fear however they'll identify that blood serum levels of an ingested drug are variable enough as it is due to the uniqueness of humans, that actively modulating humans ability to process exogenous chemicals is a recipe for disaster. Maybe they'll even get it close to right for Drug A, but what about Drug B that any given patient is concomitantly taking?