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Drugs cause emesis by irritating the gastric mucosa. Emetic drugs include the following;  
 
Drugs cause emesis by irritating the gastric mucosa. Emetic drugs include the following;  
   −
**Histamine
+
*Histamine
**ACh
+
*ACh
**Dopamine
+
*Dopamine
**Catecholamines
+
*Catecholamines
**5-hydroxytryptamine
+
*5-hydroxytryptamine
**Substance P
+
*Substance P
**Enkephalins
+
*Enkephalins
**NK1 receptor agonists
+
*NK1 receptor agonists
    
===Anti-emetic agents===
 
===Anti-emetic agents===
1,473

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