I had a hard time finding it locally even in the U.S.P. which makes me nervous because it still says to call poison control if ingested. So I stumbled on a bottle of NOW brand 100% percent vegetable glycerin, 16oz for about seven bucks, at Whole Foods. Not a bad price either. I hope this can help others who find relief in this amazingly effective delivery system. I wish you a peaceful pain-free day.