21891
Following the treatment period , using an equivalent weekly levothyroxine dose which was significantly less than that of the daily dose taken by the patients before the test , the TSH reduced from baseline in ~ 75 % of cases .
 Chemical: levothyroxine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: levothyroxine