Nitroglycerin is a heavy, colorless, oily, explosive liquid most commonly produced by treating glycerol with white fuming nitric acid under conditions appropriate to the formation of the nitric acid ester. nitroglycerin has been used as an active ingredient in the manufacture of explosives, mostly dynamite, and as such it is employed in the construction, demolition, and mining industries. Nitroglycerin is also a major component in double-based smokeless gunpowders used by reloaders. Combined with nitrocellulose, there are hundreds of (powder) combinations used by rifle, pistol, and shotgun reloaders. nitroglycerin has been used medically as a potent vasodilator to treat heart conditions, such as angina pectoris and chronic heart failure.Nitroglycerin is available in sublingual tablets, sprays, and patches. Other potential suggested uses include adjunct therapy in prostate cancer.