Okay, I've given this some thought and some questions in return:

Does the status effect take place immediately (ie is it magic?), or does it work like actual medicine and needs to be digested/absorbed into the body first?

Does the effect continue on after the food has been eaten for a time?

Does it provide anything extra, or just neutralise poisons? (ie if there's a poison that, say, drags the potassium/calcium etc ions out of the cells, does it just stop the poison working, or does it also put the stuff back?)