Have my 'emergency' colonoscopy tomorrow after months of waiting and I'm really struggling to get the moviprep down. I've managed 3/4 of the first litre (second litre is for the morning) but I can't stop gagging when I drink it. I've added cordial, lemonade and drinking through a straw whilst holding my nose and still not managing. Any tips? Its been nearly 4 hours since I started and I keep having to stop because of the nausea