emetic


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emetic

(əmĕt`ĭk), substance that produces vomiting. Direct, or gastric, emetics, which act directly on the stomach, include syrup of ipecacipecac
, drug obtained from the dried roots of a creeping shrub, Cephaelis (or Psychotria) ipecacuanha, native to Brazil but cultivated in other tropical climates.
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, sulfate of zinc or copper, alumalum
, any one of a series of isomorphous double salts that are hydrated sulfates of a univalent cation (e.g., potassium, sodium, ammonium, cesium, or thallium) and a trivalent cation (e.g., aluminum, chromium, iron, manganese, cobalt, or titanium).
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, ammonium carbonate, mustard in water, or copious quantities of warm saltwater. Indirect, or systemic, emetics, such as apomorphine, induce vomiting by acting indirectly through the blood on the brain center that controls vomiting. Emetics are not used to treat poisoning by strong acids or alkalis, petroleum distillates such as kerosene, or substances causing convulsions.

Emetic

 

an agent that induces vomiting. Emetics are distinguished according to whether they act on the vomiting center in the brain (for example, apomorphine) or whether they irritate the mucous membrane of the stomach and reflexly excite the stomach’s vomiting center (ipecac or thermopsis). Emetics are used to counteract the effects of poisoning and to treat chronic alcoholism. For example, an injection of apomorphine combined with ingestion of alcohol leads to a conditioned reflex causing the taste and odor of alcohol to induce vomiting. When taken in small doses, emetics act as expectorants.

emetic

[i′med·ik]
(pharmacology)
Any agent that induces emesis.

emetic

1. causing vomiting
2. an emetic agent or drug
References in periodicals archive ?
Figure 1 (see p23) shows the main neurotransmitters for each emetic pathway.
To prevent delayed emesis in patients receiving cisplatin and other high emetic risk agents, dexamethasone and aprepitant is recommended on day 2 and 3 as well.
During the emetic phase, the goal is to rapidly terminate the episode, preferably within 1 hour of onset.
First, a laxative of rhubarb or calomel or an emetic, ipecac, to be followed up with a mixture of rust of iron, powdered columbo root, and orange peel twice a day for four weeks.
Combining antiemetics that act on different receptor sites may result in improved efficacy, so instead of increasing the dose of 25 mg of Phenergan (promethazine) or 8 mg of ondansetron, for example, another antiemetic agent that works on different emetic receptors can be added to improve efficacy, Dr.
Like lobelia, it is an emetic in large doses that when combined with nicotine will cause nausea and can be used as a deterrent in this way.
After 10 mm, copper sulfate anhydride was administered orally in a dose of 50 mg/kg, then the number of retching (an emetic action without vomiting gastric materials) was recorded during the next to mm.
Bacillus cereus produces two distinct clinical syndromes: diarrheal and emetic (Table 1).
And Jonson's "purge" of Marston in Poetaster ("Horace" purging "Crispinus") would have been a clearer example of the shameful emetic than Paster's provocative but finally less persuasive reading of Titania and Bottom.
cereus, a ubiquitous, spore-forming bacteria, causes two recognized forms of foodborne gastroenteritis: an emetic syndrome resembling that caused by Staphylococcus aureus and characterized by an incubation period of 1-6 hours and a diarrheal illness characterized by an incubation period of 6-24 hours (2).