I decided to buy 2cp via internet, but I read that the trip can take up to 20 hours depending on the dose, I read that some substances can be canceled (abort the trip) I wonder if there any medicine I can take to cut a 2cp trip, thanks 
Order risperidone or haloperidol. The Haldol is preferable IMO. Don't trip without having several on-hand.
I only would dose this nasally because of its duration, but even then its not worth it.
It's a shitty drug.
Dose low. Like 2mg.
Obviously less than that for an allergy test. I'd suggest dosing nasally, the burn is pretty bad be warned.
Just to offer an opposing opinion - every time I have used kratom (a mild opiate) while tripping in an attempt to prevent or reduce minor difficulty, it has made it worse. It just seems to make me less resilient than I normally would be.if a trip is getting uncomfortable for me a fail safe drug much better than benzos is poppy tea. morphine will turn any negative trip back to a good one. fact (IME every time).