Preparation and Characterization of Self-Microemulsifying Drug Delivery System of Olmesartan Medoxomil for Bioavailability Improvement

Table 3

Emulsification efficiency of various surfactants, and cosurfactants.

Surfactants/co-surfactants	Transparency*(%)	No. of inversions*
Tween 80	99.8	5
Tween 20	98	15
Span 80	50.5	40
Transcutol P	100	5
Plurol Oleique	88.6	25
PEG 200	98.1	35
PEG 400	99.3	30
Propylene glycol	99.4	10
Capmul MCM C-8	80	40

*Values are expressed as mean (𝑛=3).