Scopolamine is a muscarinic antagonist structurally similar to the neurotransmitter acetylcholine and acts by blocking the muscarinic acetylcholine receptors and thus classified as an anticholinergic. Scopolamine has many uses including the prevention of motion sickness. It is not clear how Scopolamine prevent nausea and vomiting due to motion sickness. The vestibular part of the ear is very important for balance, When a person becomes disoriented due to motion, the vestibular sends a signal through nerves to the vomiting center in the brain, and vomiting occurs.