4128
After 8 weeks of therapy , in patients whose blood pressure remained uncontrolled , 5 mg amlodipine was added to the initial therapy .
 Chemical: amlodipine
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: amlodipine