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Nitrates are commonly used to treat angina. Nitrates dilate your blood vessels and help them relax, allowing more blood to flow to your heart muscle. You can take nitrates when you feel chest tightness associated with angina, before doing something that usually triggers angina (such as physical exertion), or as a long-term preventative measure. Hello, I am Dr. Walid Khaled, an internal medicine specialist. I work in Germany and live in Munich / waleed.khalid.5688 My Facebook page to subscribe to the channel / @drwaleedgermany Click on the link to subscribe to the channel of the writer Al-Labib / @الاديباللبيب #Dr._Waleed_Germany #الطبـاللبيب