Dad has stage 4 cancer. Had first chemo 12 days ago. Had 3 trips to A&E due to vomiting and labrinthitus. Was very ill. Touch wood, hasn't thrown up in about a week now and dizzyness has passed. But he is now not sleeping. None of his anti-sickness pills were staying down so the doctors gave him Buccastem M that he could dissolve through his gym so that way it would stay in him even if he did throw up. Since he's been taking them, he has been feeling much better.The only issue now, is he cannot sleep. My dad has always been the person who culd sleep on a washing line during a storm. Always asleep on the sofa, sleeping through the night, snoring. But since he's been on them, he cannot sleep at all during the night and cannot sleep during the day, even for a few minutes. I know what it's like to not sleep and you get caught in a viscious circle. He stopped taking the Buccal pills on Sunday as he's been feeling much better and they do say they can keep you awake, but its a few days later and he is still struggling to sleep at all. Any tips?