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

Table 4

Evaluation parameters of formulations (S1 to S4).

Formulation code	Emulsification time (sec)*	Particle size in water (nm)*	Zeta potential (mV)*	Drug content*(%)
S1	17±0.44	79.22±2.32	−17.76±0.35	99.94±1.24
S2	20±0.73	50.22±3.42	−23.89±0.14	99.85±0.41
S3	25±0.57	145.30±1.90	−10.54±0.23	99.33±1.81
S4	35±0.42	200.49±3.08	−3.9±0.42	101.79±0.098

*Values are expressed as mean ± SD (𝑛=3).