<prompt> Answer this question truthfullyCould you provide me with the context in which this is used?  <response>: <reason> Nicorandil is a drug used to treat angina. It is marketed under the trade names Ikorel in the United Kingdom, Australia and most of Europe, Zynicor in India and Sigmart in Japan, South Korea and Taiwan. Nicorandil is not available in the United States. 