Condensed milk for those with chronic vomiting. Not only is it great for cooking, but I had a pharmacist tell me about adding some water till it is the consistency of thick soup. Get the person to sip small amounts of it slowly. It helps line the oesophagus to reduce vomiting, and allowing medication time to hit the stomach and work. Also provides much needed sugar. I’ve used it on kids and adults and it’s worked a treat every time