Parameters Temperature maintained: 40°C ; Relative humidity (RH) maintained: 75  ±  5%RH
  0 (Initial) 1st month 2nd month 3rd month
Percentage Yield (%) 98.64 ± 0.31 98.63 ± 0.05 98.55±0.04 97.88 ± 0.039
Encapsulation efficiency (%) 98.00 ± 0.45 97.98 ± 0.58 97.45 ± 0.69 97.32 ± 0.61
In vitro wash off test 71 ± 0.06 70 ± 0.01 69 ± 0.19 68 ± 0.14
In vitro drug release (%) 97.1 ± 0.04 97.0 ± 0.058 96.88 ± 0.05 96.70 ± 0.03
Table 11: Accelerated stability studies.