8235
Metformin , an extensively used and well - tolerated drug for treating individuals with type 2 diabetes , has recently gained significant attention as an anticancer drug .
 Chemical: Metformin
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: Metformin 
Answer:
 Chemical: Metformin