| Scientific noun: Nigella Damascena L. |
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| Family: Buttercup family- ranunculaceae | |
| Habitat: In sown fields and dry Mediterranean places. Also cultivated in some other cold places as a garden plant. |
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| Composition: . Alkaloids: Damascenine. . Essential oil |
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| Active parts:: The seeds where damascenine is concentrated in a proportion of 0, 7 %. and essential oil - in this case proportion may reach to 9% | |
| Properties : hepatic, astringent, carminative, vermifuge. | |
| Toxicity: Very high. Symptoms: vomits, headache, diarrhea, convulsions, icterus, liver injuries, weakness , comma and death. Medical treatment : The patient must vomit without taking vomitives. Gastric lavage and artificial respiration. |