Nitroglycerine, a thick, clear, toxic liquid, was discovered by the italian chemist A. Sobrero in the mid-19th century. two decades later, Swedisch scientist Alfred Nobel used it as the explosive component in dynamite. In conventional medicine it is used to treat heart disease. homeopathically, the remedy is made from glycerine, nitric and sulfuric acid. In Victorian times, typesetters and printers who worked under the powerful heat of incandescent gas lamps used it to treat the severe headches they suffered. teh remedy is mainly used for boold and ciculation conditions.