Promethazine
"I suffer from severe anxiety, irritable bowel syndrome, and acid reflux disease. I have inflamed intestines quite often, which causes me to feel nauseous and on the verge of vomiting a few times a week. I got this medicine through an I.V. when I went into the Hospital for severe stomach pains, and was highly nauseous. It worked so well and relaxed me, I fell asleep for a few hours. They gave me a bottle and told me to use as needed. Now, when I have that feeling coming on, I'll pop one of those and relax & sleep it off. Always wake up feeling much better!"