Yeah you can certainly have a bad time when you drink too much too fast, I recommend not taking more than 4-8oz at most every 15 minutes especially when you're first starting out with kava and have a low tolerance still.
^ This. The other night I drank too much kava too quickly. Had to lay down for around 40 minutes with eyes closed. I then got up and immediately finished a few more shells
^ This. The other night I drank too much kava too quickly. Had to lay down for around 40 minutes with eyes closed. I then got up and immediately finished a few more shells