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Food effects on the pharmacokinetics of doxylamine hydrogen succinate 25 mg film-coated tablets: a single-dose, randomized, two-period crossover study in healthy volunteers.

Videla S, Lahjou M, Guibord P, Xu Z, Tolrà C, Encina G, Sicard E, Sans A - Drugs R D (2012)

Bottom Line: No statistically significant between-treatment differences were observed for any of the pharmacokinetic parameters under study.High-fat, high-calorie food intake does not affect the kinetics of doxylamine in healthy subjects.The drug was safe and well tolerated by the subjects in this study.

View Article: PubMed Central - PubMed

Affiliation: Clinical Investigation, Laboratorios del Dr. Esteve SA, Barcelona, Spain.

ABSTRACT

Background: Doxylamine succinate, an ethanolamine-based antihistamine, is used in the short-term management of insomnia because of its sedative effects. The data available on the pharmacokinetic profile of doxylamine in humans are limited, notwithstanding that this drug has been marketed in European countries for more than 50 years. In fact, no data on the effect of food on the pharmacokinetic parameters of doxylamine are available.

Objective: The objective of this study was to evaluate the pharmacokinetic parameters of doxylamine following a single oral dose of doxylamine hydrogen succinate 25 mg in healthy human subjects under fed and fasting conditions.

Study design: This was a single-center, randomized, single-dose, laboratory-blinded, two-period, two-sequence, crossover study.

Setting: The study was conducted in a phase I clinical unit.

Subjects and methods: A single oral dose of doxylamine hydrogen succinate 25 mg (equivalent to 17.4 mg of doxylamine base) was administered to healthy volunteers under either fed conditions (high-fat, high-calorie food intake) or fasting conditions in each study period. The drug administrations were separated by a wash-out period of seven calendar days. Plasma samples were collected for up to 60 hours postdose, and plasma doxylamine concentrations were determined by a high-performance liquid chromatography method with tandem mass spectrometry detection. Pharmacokinetic parameters were calculated using noncompartmental analysis. Safety was evaluated through assessment of adverse events, standard laboratory evaluations, vital signs, and 12-lead electrocardiography.

Results: In total, 24 healthy subjects (12 male and 12 female) were included in the study. Doxylamine succinate 25 mg tablets exhibited similar oral bioavailability of doxylamine in the fasting state (mean maximum plasma drug concentration [C(max)] 118.21 ng/mL, coefficient of variation [CV] 19.2%; mean area under the plasma concentration time curve from time zero to time t [AUC(t)] 1746.97 ng · h/mL, CV 31.6%) and in the fed state (mean C(max) 120.99 ng/mL, CV 15.0%; mean AUC(t) 1712.20 ng · h/mL, CV 26.7%). No statistically significant between-treatment differences were observed for any of the pharmacokinetic parameters under study. The fed : fasting ratios of the geometric least squares means with corresponding 90% confidence intervals for C(max) and AUC(t) were within the range of 80-125%.

Conclusion: High-fat, high-calorie food intake does not affect the kinetics of doxylamine in healthy subjects. The drug was safe and well tolerated by the subjects in this study.

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Related in: MedlinePlus

Linear profile of the mean plasma concentrations of doxylamine in the fed and fasting states.
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Fig1: Linear profile of the mean plasma concentrations of doxylamine in the fed and fasting states.

Mentions: Tables I and II depict the doxylamine pharmacokinetic results: Cmax, tmax, AUCt, AUC∞, AUCt : AUC∞, ke, and t½ in both the fed and fasting states. No statistically significant between-treatment differences were observed for any of the pharmacokinetic parameters under study. The usual criteria used to assess the food effect of the test formulation were fulfilled. The fed : fasting ratio of the geometric LS means and corresponding 90% confidence intervals for Cmax and AUCt were within the range of 80–125%. Figures 1 and 2 show the linear and logarithmic profiles of the mean plasma concentrations of doxylamine. Table III shows the main pharmacokinetic parameters of doxylamine, analyzed by sex.Table I


Food effects on the pharmacokinetics of doxylamine hydrogen succinate 25 mg film-coated tablets: a single-dose, randomized, two-period crossover study in healthy volunteers.

Videla S, Lahjou M, Guibord P, Xu Z, Tolrà C, Encina G, Sicard E, Sans A - Drugs R D (2012)

Linear profile of the mean plasma concentrations of doxylamine in the fed and fasting states.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3585842&req=5

Fig1: Linear profile of the mean plasma concentrations of doxylamine in the fed and fasting states.
Mentions: Tables I and II depict the doxylamine pharmacokinetic results: Cmax, tmax, AUCt, AUC∞, AUCt : AUC∞, ke, and t½ in both the fed and fasting states. No statistically significant between-treatment differences were observed for any of the pharmacokinetic parameters under study. The usual criteria used to assess the food effect of the test formulation were fulfilled. The fed : fasting ratio of the geometric LS means and corresponding 90% confidence intervals for Cmax and AUCt were within the range of 80–125%. Figures 1 and 2 show the linear and logarithmic profiles of the mean plasma concentrations of doxylamine. Table III shows the main pharmacokinetic parameters of doxylamine, analyzed by sex.Table I

Bottom Line: No statistically significant between-treatment differences were observed for any of the pharmacokinetic parameters under study.High-fat, high-calorie food intake does not affect the kinetics of doxylamine in healthy subjects.The drug was safe and well tolerated by the subjects in this study.

View Article: PubMed Central - PubMed

Affiliation: Clinical Investigation, Laboratorios del Dr. Esteve SA, Barcelona, Spain.

ABSTRACT

Background: Doxylamine succinate, an ethanolamine-based antihistamine, is used in the short-term management of insomnia because of its sedative effects. The data available on the pharmacokinetic profile of doxylamine in humans are limited, notwithstanding that this drug has been marketed in European countries for more than 50 years. In fact, no data on the effect of food on the pharmacokinetic parameters of doxylamine are available.

Objective: The objective of this study was to evaluate the pharmacokinetic parameters of doxylamine following a single oral dose of doxylamine hydrogen succinate 25 mg in healthy human subjects under fed and fasting conditions.

Study design: This was a single-center, randomized, single-dose, laboratory-blinded, two-period, two-sequence, crossover study.

Setting: The study was conducted in a phase I clinical unit.

Subjects and methods: A single oral dose of doxylamine hydrogen succinate 25 mg (equivalent to 17.4 mg of doxylamine base) was administered to healthy volunteers under either fed conditions (high-fat, high-calorie food intake) or fasting conditions in each study period. The drug administrations were separated by a wash-out period of seven calendar days. Plasma samples were collected for up to 60 hours postdose, and plasma doxylamine concentrations were determined by a high-performance liquid chromatography method with tandem mass spectrometry detection. Pharmacokinetic parameters were calculated using noncompartmental analysis. Safety was evaluated through assessment of adverse events, standard laboratory evaluations, vital signs, and 12-lead electrocardiography.

Results: In total, 24 healthy subjects (12 male and 12 female) were included in the study. Doxylamine succinate 25 mg tablets exhibited similar oral bioavailability of doxylamine in the fasting state (mean maximum plasma drug concentration [C(max)] 118.21 ng/mL, coefficient of variation [CV] 19.2%; mean area under the plasma concentration time curve from time zero to time t [AUC(t)] 1746.97 ng · h/mL, CV 31.6%) and in the fed state (mean C(max) 120.99 ng/mL, CV 15.0%; mean AUC(t) 1712.20 ng · h/mL, CV 26.7%). No statistically significant between-treatment differences were observed for any of the pharmacokinetic parameters under study. The fed : fasting ratios of the geometric least squares means with corresponding 90% confidence intervals for C(max) and AUC(t) were within the range of 80-125%.

Conclusion: High-fat, high-calorie food intake does not affect the kinetics of doxylamine in healthy subjects. The drug was safe and well tolerated by the subjects in this study.

Show MeSH
Related in: MedlinePlus