[Heaven's Night]

Yep, typically the thing about rectal/buccal/sublingual adminstration is about the molecule size being suitable for that, which a lot of herbal etc., stuff is not. Then again some things might behave differently, with BO I would presume oral is the way to take it as that's how its intended to be used. Also its such a grey area, there's no absolute certainty what are the requirements for it to work. Best guesses are dose, core temperature and the existing hormone balance on which its taken.