2848
In spite of higher terbutaline concentrations after oxprenolol pretreatment , the hypokalemia was almost completely antagonized by the beta 2 - blocking action .
 Chemical: terbutaline; Chemical: oxprenolol; Disease: hypokalemia
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: terbutaline; Chemical: oxprenolol; Disease: hypokalemia