Changes

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===