So far I haven't experienced any real nausea with flushing and I know others have had problems so I thought I'd pass along the following suggestion which I think is the secret to why I haven't had any problems. Just before drinking the olive oil concoction, I put on Seabands. I swear by them. They're also great for motion sickness. They're cheap (under $10 at most drug stores) and very simple to use. Basically they are two elasticized bands with a small plastic bump on the inside. They go on both wrists and the bump presses on an acupressure point inside your wrist. If the elastic starts to get stretched out and they not longer fit tightly, you'll want to get new ones though. I found that out the hard way. HTH someone.