Scopolamine patch (Transderm Scop®) is a medicine prescribed to prevent nausea and vomiting due to motion sickness, anesthesia, or surgery. It comes as a patch that is placed on the skin behind the ear. It is applied at least four hours before the effect is desired, and can be left in place for up to three days.
The brand-name version, sold under the name Transderm Scop, is made by ALZA Corporation for Novartis Consumer Health, Inc. Although all of the patents for this medication have expired, there are no generic versions of scopolamine patches available at this time. It is not exactly clear why this is the case. It could be that there is such a small demand for this product that companies would not profit from making a generic version.
(Click Generic Transderm Scop for more information on this topic, including an explanation of the difference between a generic name and a generic version of a drug.)