Preparation and Evaluation of Intravaginal Ring Containing Drospirenone
Figure 10
Mean in vitro daily (a) and cumulative (b) release of profile of drospirenone from different type silicone vaginal rings (▲ matrix type; ○ PVP-SD (1 : 1) reservoir type; reservoir type) loading the same weight 200 mg drug in 21 d.
