Next, we conducted a short-term stability study using solid dispersion tablets. After two weeks of storage at 60 °C, the degradation product levelof PVPVA solid dispersion tablets (0.11%) was lower than that of HPMCAS solid dispersion tablets (0.44%). This difference likely arises from the potential incompatibility between the drug and polymer. On the basis of these results, we selected PVPVA solid dispersion tablets for further development because of its enhanced absorption and high stability.