i have used walnut, sunflower and safflower oil for liver flushes. they all work and none of those taste bad. i understand how OO can make you want to vomit. i have stopped using it and i still get tons of stones out using these other oils. you may want to try one of these. another thing i do if i am to get nauseaus is suck on a brach's peppermint. works everytime.