Use hot bottles and stimulants, especially trying to counteract the cardiac depression by atropine, caffeine, strophanthin, &c.
It often relieves neuralgia, especially when combined with caffeine and quinine.
The principal chemicals in tea are: caffeine, tannin and essential oil.
Caffeine (formerly known as theme) is the alkaloid of tea, and is identical with that of coffee, guarana, mate and kola nut.
Inject stimulants subcutaneously; give coffee - hot and strong - by the mouth and rectum, or use large doses of caffeine citrate; and employ artificial respiration.
Dimethylparabanic acid (cholesterophane), C0[NCH 3 C0] 2, is formed by oxidizing caffeine or by methylating parabanic acid.
The chief of these are coffee or caffeine and atropine.
A pint of hot strong coffee may be introduced into the rectum, and caffeine in large doses - ten or twenty grains of the carbonate - may be given by the mouth.
The tetramethyl derivative, amalic acid, C$(CH3)4N407, has been prepared by oxidizing caffeine with chlorine water, and forms colourless crystals which are only slightly soluble in hot water.