Abstract
We compared the pharmacokinetic (PK) profiles of diethylstilbestrol orally dissolving film (DES ODF) and DES-capsule as well as assessing the safety, local tolerability, taste, and disintegration time of DES ODF. Twelve healthy male volunteers receiving a single administration of 2.0 mg of DES ODF or DES-capsule were included in the study. The tolerability, taste, and time to dissolution of DES ODF were assessed after dosing. Safety assessments included adverse events, hematology and biochemistry tests, urinalysis, vital signs, and electrocardiography. The PK parameters of DES ODF were all greater than those of DEScapsule. The Cmax values were 5.64 ± 1.1 and 3.4 ± 1.93 ng/mL for DES ODF and DES-capsule, respectively. Assessment of bioequivalence was based on the 90% CIs of the treatment ratios of the log-transformed Cmax, AUC0-t, and AUC0-∞ (DES ODF to DES-capsule), with the mean values being 1.93 (141 - 264), 1.24 (98 - 156), and 1.59 (121 - 207), respectively, indicating that DES ODF had a significantly high bioavailability. The mean DES ODF disintegration time was 14 ± 5 minutes. DES ODF was well tolerated and no serious adverse events or clinically relevant changes were observed. The DES ODF is well tolerated and better absorbed in comparison with DES-capsule.
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