4563
CONCLUSION : This small study suggests that a once - daily dosing regimen of tobramycin is at least as effective as and is no more and possibly less toxic than the twice - daily regimen .
 Chemical: tobramycin
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: tobramycin