18835
The validated method was successfully used to determine tadalafil concentration in rat plasma samples after oral administration at a dose of 1 mg / kg .
 Chemical: tadalafil
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: tadalafil 
Answer:
 Chemical: tadalafil