Preparation and Evaluation of Intravaginal Ring Containing Drospirenone

Figure 3

DSC spectrum of drospirenone under air atmosphere. An endothermic peak corresponding to melting point was obtained for drospirenone crystals at 195.59°C. No exothermic peak was seen in the thermograms suggesting stability of drospirenone-loaded silicone elastomer matrix in the temperature range tested.