4742
Sumatriptan succinate , a serotonin - 1 ( 5 - hydroxytryptamine - 1 ) receptor agonist , is an antimigraine drug that is reported to act by selectively constricting intracranial arteries .
 Chemical: Sumatriptan succinate; Chemical: serotonin; Chemical: 5 - hydroxytryptamine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: Sumatriptan succinate; Chemical: serotonin; Chemical: 5 - hydroxytryptamine