Influence of Food-intake on Desmopressin Oral Tablets & MELT-formulation

Status Completed

Clinical Trial Summary

Alarm-treatment as well as Desmopressin, a synthetic analogue of human vasopressin, are considered the only evidence-based medicine (EBM) IA treatments in monosymptomatic nocturnal enuresis (MNE). Desmopressin exists in three different formulations for ambulant use: nasal spray, tablet and lyophilisate (MELT) each with differences in bioavailability (spray 2%, tablet 0.2%, MELT 0.5%). There 's insufficient evidence to confirm the actually used bioequivalent doses ( 10µg spray = 120µg MELT= 0.2mg tablet).

Although so frequently used, very few pharmacokinetic and -dynamic data on desmopressin are available for children.

Due to prolonged half life, associated with waterintoxication,the nasal spray has a black box warning from the FDA and is no longer recommended . For some authors oral formulations appear to be a safer alternative. However, based on clinical experience of less response rate with oral formulations, lower biodisponibility is suspected. Adult research confirms low bioavailability of tablets but also show major influences by food-intake and changes in gastro-intestinal motility.

To achieve maximum efficacy, recommendations are to take desmopressin tablet 1 hour before bedtime and 2 hours after meal: this is unrealistic in schoolaged children since there never is 3 hours between evening meal and bedtime.

In 2005 a dose response study demonstrated superior pharmaco-kinetic and dynamic properties for desmopressin Lyophilisate MELT formula.

Since these results implicate superior action of MELT, often a change to MELT is recommended if there is a suboptimal response with tablet: sublingual absorption would eliminate the influence of food-intake.

However, for this statement there's no evidence, since these tests were all conducted in children in fasting condition. Only one clinical study demonstrates bioequivalence for MELT and tablet.

Hypothesis is that desmopressin MELT formulation has a better bioavailability when administered together with meal due to its sublingual absorption.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT01036841
Study type	Interventional
Source	University Hospital, Ghent
Contact
Status	Completed
Phase	Phase 4
Start date	December 2009
Completion date	April 2010

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See also
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Influence of Food-intake on Desmopressin Oral Tablets and MELT-formulation — TM

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms