It is recommended to move around after 20 minutes after taking nitroglycerin, the specific activity time should refer to the specific condition. Nitroglycerin has a vasodilatory effect, generally sublingual administration, 2~3 minutes to play a role, the duration of the effect of the drug in 10 minutes or so, after taking nitroglycerin is recommended to 20 minutes after the activity, so as to avoid the occurrence of postural hypotension, dizziness or fainting symptoms. Nitroglycerin is mainly used for acute angina rescue, sublingual can be fast-acting, expansion of coronary arteries, increase the blood supply of coronary arteries, for the chest pain is particularly serious patients, may have an acute myocardial infarction, containing nitroglycerin can not be relieved, the patient can not be active, to immediately call the 120 emergency telephone, the activity will lead to aggravation of the condition. Patients with angina pectoris after the onset of the disease should immediately stop activities, rest, quickly containing nitroglycerin, the condition completely stabilized can be appropriate activities, the condition is serious to immediately go to the hospital.