2022
Blood samples for the analysis of plasma potassium , terbutaline , metoprolol ( racemic , R - and S - isomer ) , and alpha - hydroxymetoprolol concentrations were taken at regular time intervals , during 8 hr after metoprolol .
 Chemical: potassium; Chemical: terbutaline; Chemical: metoprolol; Chemical: alpha - hydroxymetoprolol; Chemical: metoprolol
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: potassium; Chemical: terbutaline; Chemical: metoprolol; Chemical: alpha - hydroxymetoprolol; Chemical: metoprolol