Last failure I had (26 1/2 years ago), I experienced horrific vomiting (empty stomach

) before entering la-la land. I was really out there, but I don't remember it letting up for any length of time.
Like Monica, I think it largely depends on you, whether there is a blockage or not (or disconnection, or kink, etc), how complete it is, and where it is (closer to the brain, or the stomach).
LIZARD