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 (ăt′rə-pēn′, -pĭn) also at·ro·pin (-pĭn)
A poisonous, bitter, crystalline alkaloid, C17H23NO3, obtained from belladonna and other related plants. It is used to dilate the pupils of the eyes and as an antispasmodic.

[From New Latin Atropa, genus name of belladonna, from Greek Atropos, Atropos; see Atropos.]


(ˈætrəˌpiːn; -pɪn) ,




(Pharmacology) a poisonous alkaloid obtained from deadly nightshade, having an inhibitory action on the autonomic nervous system. It is used medicinally in pre-anaesthetic medication, to speed a slow heart rate, and as an emergency first-aid counter to exposure to chemical warfare nerve agents. Formula: C17H23NO3
[C19: from New Latin atropa deadly nightshade, from Greek atropos unchangeable, inflexible; see Atropos]


(ˈæ trəˌpin, -pɪn)

a poisonous crystalline alkaloid, C17H23NO3, obtained from belladonna or other nightshade plants, used chiefly to relieve spasms or, topically, to dilate the pupil of the eye.
[1830–40; < New Latin Atrop(a) belladonna genus < Greek átropos not turnip, inflexible; see a-6, -trope]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.atropine - a poisonous crystalline alkaloid extracted from the nightshade family; used as an antispasmodic and to dilate the eye pupil; also administered in large amounts as an antidote for organophosphate nerve agents or organophosphate insecticides
antidote, counterpoison - a remedy that stops or controls the effects of a poison
antispasmodic, antispasmodic agent, spasmolytic - a drug used to relieve or prevent spasms (especially of the smooth muscles)
belladonna - an alkaloidal extract or tincture of the poisonous belladonna plant that is used medicinally
mydriatic, mydriatic drug - a drug that causes the pupil of the eye to dilate; used to aid eye examinations
alkaloid - natural bases containing nitrogen found in plants
poison, poisonous substance, toxicant - any substance that causes injury or illness or death of a living organism


n atropina
References in periodicals archive ?
Atropine has to be given as long as there is nerve agent present.
25%w/v Eye Dro, Anti Infective,Anti Inflammatory (Otec AC) ear drops bott of 5 ml, Atropine sulphate 1% w/v bott of 3 ml eye drops, Atropine sulphate oint 1% Tube of 3 gm eye oint, Betamethasone 0.
One product that UK optometrists do not have access to in the UK is low-dose atropine, which is available in Australia.
Jong Nam, who was poisoned by the prohibited VX nerve agent, had with him 12 glass vials of atropine, according to a (http://www.
Then, tissue was exposed to atropine (10 [micro]M) for 2 min, and subsequently, recordings were obtained after exposure to acetylcholine (100 [micro]M) again at 0.
Nevertheless, atropine (a nonselective muscarinic antagonist) blocks the increase in liquid GE in the presence of hypoglycemia in humans (15) and rats (16).
Patients must be carefully observed after stabilisation for changes in atropine needs, worsening respiratory function because of IMS, and recurrent cholinergic features occurring with fat-soluble organophosphorus compounds.
Nevertheless, it has been shown that atropine alone already improves the recovery of Fade induced by antinicotinic (hexamethonium, D-tubocurarine) agents in the anterior tibial muscle nerve preparation of cats (Prado, Corrado, & Prado, 1987).
The surgical removal of bursa was carried out under standing anaesthesia with Xylazine and Ketamine premedication along with Atropine sulphate.
Scopolamine is thought to be the primary compound responsible for the toxic effects of these plants, and atropine is an artifact of purification.
On the basis of clinical features and histopathology, a diagnosis of multiple eccrine hidrocystomas was made and the patient was treated with topical 1% atropine cream twice a day for two weeks.