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Hyoscyamine :: Hyoscyamine (n.) An alkaloid found in henbane (Hyoscyamus niger), and regarded as its active principle. It is also found with other alkaloids in the thorn apple and deadly nightshade. It is extracted as a white crystalline substance, with a sharp, offensive taste. Hyoscyamine is isomeric with atropine, is very poisonous, and is used as a medicine for neuralgia, like belladonna. Called also hyoscyamia, duboisine, etc..

Juglandine :: Juglandine (n.) An alkaloid found in the leaves of the walnut (Juglans regia).

Meconidine :: Meconidine (n.) An alkaloid found in opium, and extracted as a yellow amorphous substance which is easily decomposed..

Peptotoxine :: Peptotoxine (n.) A toxic alkaloid found occasionally associated with the peptones formed from fibrin by pepsinhydrochloric acid.

Aconitine :: Aconitine (n.) An intensely poisonous alkaloid, extracted from aconite..

Narcotine :: Narcotine (n.) An alkaloid found in opium, and extracted as a white crystalline substance, tasteless and less poisonous than morphine; -- called also narcotia..

Antipyrine :: Antipyrine (n.) An artificial alkaloid, believed to be efficient in abating fever..

Cinchonine :: Cinchonine (n.) One of the quinine group of alkaloids isomeric with and resembling cinchonidine; -- called also cinchonia.

Sinapine :: Sinapine (n.) An alkaloid occuring in the seeds of mustard. It is extracted, in combination with sulphocyanic acid, as a white crystalline substance, having a hot, bitter taste. When sinapine is isolated it is unstable and undergoes decomposition..

Quinoline :: Quinoline (n.) A nitrogenous base, C9H7N obtained as a pungent colorless liquid by the distillation of alkaloids, bones, coal tar, etc. It the nucleus of many organic bodies, especially of certain alkaloids and related substances; hence, by extension, any one of the series of alkaloidal bases of which quinoline proper is the type..

Lobeline :: Lobeline (n.) A poisonous narcotic alkaloid extracted from the leaves of Indian tobacco (Lobelia inflata) as a yellow oil, having a tobaccolike taste and odor..

Glaucine :: Glaucine (n.) An alkaloid obtained from the plant Glaucium, as a bitter, white, crystalline substance..

Tropeine :: Tropeine (n.) Any one of a series of artificial ethereal salts derived from the alkaloidal base tropine.

Meconin :: Meconin (n.) A substance regarded as an anhydride of meconinic acid, existing in opium and extracted as a white crystalline substance. Also erroneously called meconina, meconia, etc., as though it were an alkaloid..

Hygrine :: Hygrine (n.) An alkaloid associated with cocaine in coca leaves (Erythroxylon coca), and extracted as a thick, yellow oil, having a pungent taste and odor..

Protopine :: Protopine (n.) An alkaloid found in opium in small quantities, and extracted as a white crystalline substance..

Physostigmine :: Physostigmine (n.) An alkaloid found in the Calabar bean (the seed of Physostigma venenosum), and extracted as a white, tasteless, substance, amorphous or crystalline; -- formerly called eserine, with which it was regarded as identical..

Guaranine :: Guaranine (n.) An alkaloid extracted from guarana. Same as Caffeine.

Emetine :: Emetine (n.) A white crystalline bitter alkaloid extracted from ipecacuanha root, and regarded as its peculiar emetic principle..

Gelsemine :: Gelsemine (n.) An alkaloid obtained from the yellow jasmine (Gelsemium sempervirens), as a bitter white semicrystalline substance; -- called also gelsemia..

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