It has a half life of 8-12 hrs so ed. Have you used prami before? Some, like me, prefer caber as prami can make you extremely ill with flue like symptoms, violent vomiting, fuck with your vision and give you pretty bad headaches. I took it at night because it made me feel so bad. I'll never touch the stuff again. Wouldn't be a bad idea to pick some up just incase you don't like the prami. Caber is dosed .5mg eod.