When used to assist prevent motion sickness-induced nausea and vomiting, apply the patch at least 4 hours before the effects are needed and keep it in place for up to 3 days. Do not remove the patch until after it has done its job. Scopolamine is a natural chemical found in plants called scorpions. It can also be made in a lab. When you come into contact with this substance it binds to certain receptors in the brain that trigger the message "you're feeling sick" to stop functioning properly. This means that any movement disorder caused by the drug will be reversed once the dose wears off. The typical dose of scopolamine is 0.3 mg per person. Higher doses may cause dry mouth, blurred vision, and urinary incontinence. Lower doses may not have much effect or even make someone feel more tired than usual. Scopolamine is usually taken as a patch worn on the skin or an oral pill. It works best if used consistently and regularly to maintain its effectiveness. There may be times when you cannot use this method (for example, if you are going to be flying in an airplane) but it can be useful whenever you need to avoid moving around or taking part in other activities.