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  • Title: Pharmacokinetics and safety profile of desmopressin oral tablet formulations in healthy Chinese subjects under fasting and fed conditions.
    Author: Li X, Zhang H, Zhu X, Li C, Chen H, Liu J, Chen G, Wu M, Liu C, Shen Z, Niu J, Liu B, Ding Y.
    Journal: Int J Clin Pharmacol Ther; 2018 Sep; 56(9):434-442. PubMed ID: 30049304.
    Abstract:
    OBJECTIVE: Desmopressin acetate (DDAVP®) is a synthetic analogue of the pituitary hormone vasopressin. Until now, few studies of desmopressin have focused on the pharmacokinetics (PK) or food effects in Asian populations. This study aimed to assess the effect of food intake on the PK of desmopressin and bioequivalence of two tablet formulations in Chinese subjects. MATERIALS AND METHODS: A single-center, single-dose, randomized, open-label, two-period crossover study was conducted in 104 healthy Chinese volunteers under fasted or fed conditions (52 volunteers for each condition). Blood samples were collected up to 14 hours after administration of oral desmopressin tablets (0.6 mg; 0.2 mg × 3) in each period. Plasma desmopressin concentrations were analyzed by validated liquid chromatography-tandem mass spectrometry (LC-MS/MS). PK and bioavailability parameters were calculated. Adverse events (AEs) were also recorded. RESULTS: No significant differences in mean (standard deviation, SD) PK parameters were observed between formulation 1 (F1) and formulation 2 (DDAVP®; F2) under both fasted and fed conditions. All AEs observed were mild and resolved quickly without treatment. The maximum concentration (Cmax) and area under the curve (AUC) were significantly decreased (p < 0.01) when the drug was taken with food, compared with fasted subjects. CONCLUSION: These findings suggest that both tablet formulations were well tolerated. Food can significantly decrease the exposure of desmopressin.
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