200
Self - emulsifying / microemulsifying drug delivery system ( SEDDS / SMEDDS ) , which are isotropic mixtures of oils , surfactants , solvents and co - solvents / surfactants , can be used for the design of formulations in order to improve the oral absorption of highly lipophilic drug compounds .
 None
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:  
Answer:
 None