(A) The recovery of IQP-0528 from the film excipients over 4 weeks at 25°C and 65% R.H. IQP-0528 solubilized in propylene glycol was mixed with PVA (white), HPMC (left diagonals), PEG400 (grey), glycerin (right diagonals), and the sum of all the excipients (polymer solution) (black). Each mixture was stored at 25°C and 65% R.H. and tested via HPLC every 7 days. (B) The recovery of IQP-0528 from the film excipients over 4 weeks at 40°C and 75% R.H. IQP-0528 solubilized in propylene glycol was mixed with PVA (white), HPMC (left diagonals), PEG400 (grey), glycerin (right diagonals), and the sum of all the excipients (polymer solution) (black). Each mixture was stored at 40°C and 75% R.H. and tested via HPLC every 7 days. Percent recovery was compared to IQP-0528 in propylene glycol. ± standard deviation; n = 3