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The objective of this study was to formulate MH into floating microspheres in order to increase its residence time at the site of absorption and thus improve its bioavailability ; and to extend the duration of action along with possibilities of dose reduction .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None