i'm confused. the title of the thread is 'getting off h' but the question seems to be 'when can i use after taking bupe?'- it depends on the dose of bupe you took, i used to only ever take minimal amounts when i was sick and couldn't score, just to hold off the worst withdrawal but still being a sweaty lethargic mess, specifically so i wouldn't get sick when i did score cos at that point i would be completely incapable of not using. i never had precipitated withdrawals, but if you have taken >4mg the case will be different. i never used gear within 4 hours of having bupe.