(( VaginaPagina ))

Nothing dangerous at all about stacking. If you're relying on your pills to prevent pregnancy, I wouldn't do it for a week since then you won't have 21 days of pills to see you through your next placebo week unless you stack that pack too. I'll let VPers who have experience stacking OTC Low advise you about the best way to go about it, because it's a triphasic pill it can be a bit trickier to pull off without having spotting. But I say it's at least worth a shot - worst that can happen is you'll bleed when you'd have been bleeding anyway. :)