Condition category
Nervous System Diseases
Date applied
Date assigned
Last edited
Retrospectively registered
Overall trial status
Recruitment status
No longer recruiting

Plain English Summary

Background and study aims
Epilepsy is a condition that affects the brain and causes repeated seizures. Before a drug can be given to people with epilepsy, it is necessary to know how the drug behaves in the human body. One of the first steps is to give the drug to healthy volunteers and analyze blood samples. After analyzing we can describes how the body affects a drug, including absorption (entering the blood circulation), distribution, metabolism and elimination of the drug - this is called pharmacokinetics. Doctors usually treat epileptic seizures with diazepam given through the anus, but this kind of application is not patient friendly and difficult to administer by bystanders. To find another drug to stop epileptic seizures, we need to find other drugs and ways to deliver them. Midazolam nose spray has been developed for this goal. The aim of this study is to find out about the absorption, distribution, metabolism and elimination of midazolam when administered as a nose spray compared to midazolam administered intravenously (into a vein) in healthy volunteers.

Who can participate?
Healthy volunteers aged 18-65.

What does the study involve?
Participants are randomly allocated to one of two groups. Participants in group 1 are treated with the midazolam nose spray, then after at least five days they are treated with intravenous midazolam.
Participants in group 2 receive the same treatments in the reverse order. In both groups blood samples are taken before administration and at regular intervals up to 240 minutes after dosing. During these 240 minutes participants inform the researcher of any adverse effects and indicate the degree of drowsiness and burning feeling in the nose.

What are the possible benefits and risks of participating?
All treatments have side effects. The most common side effect of midazolam nose spray is drowsiness and a burning feeling in the nose.

Where is the study run from?
Maastricht University Medical Center, the Netherlands.

When is the study starting and how long is it expected to run for?
November 2005 to April 2006

Who is funding the study?
Maastricht University Medical Center, the Netherlands.

Who is the main contact?
Mrs Nicole Veldhorst

Trial website

Contact information



Primary contact

Mrs Nicole Veldhorst


Contact details

P. Debyelaan 25
6229 HX

Additional identifiers

EudraCT number number

Protocol/serial number


Study information

Scientific title

Pharmacokinetics and tolerability of a formulation of midazolam 50 mg/ml nose spray vs midazolam 1 mg/ml intravenously administered in healthy Dutch subjects: a single dose, randomised-sequence, open-label, two-period crossover pilot study


Study hypothesis

To investigate pharmacokinetics and tolerability of midazolam in a new formulation, administered as a 50 mg/ml intranasal (IN) spray compared with intravenous (IV) (2.5 mg) administration in healthy adult volunteers.

Ethics approval

Medical Ethics Committee, Maastricht University Medical Centre (MUMC), 21/02/2003, MEC-02-143.5

Study design

Single-dose randomised-sequence open-label two period crossover pilot study

Primary study design


Secondary study design

Randomised cross over trial

Trial setting


Trial type


Patient information sheet

Not available in web format, please use the contact details below to request a patient information sheet


Epileptic seizures


In this cross over study subjects are randomly assigned to receive IN or IV midazolam, with a washout period of at least five days between treatments.

The 50 mg/ml IN midazolam formulation consists of 5 mg midazolam base per 0.1 ml (one spray) and is administered once in one nostril. The IV midazolam solution (2.5 mg) is infused over 10 seconds also once. Blood samples are taken before administration and at regular intervals up to 240 minutes after dosing. The duration of the intervention is 240 minutes.

Intervention type



Not Applicable

Drug names


Primary outcome measures

Pharmacokinetics of midazolam nose spray (5 mg, 50 mg/mL formulation) compared with intravenous administration (2.5 mg) - Blood samples for pharmacokinetic analysis were collected from an intravenous (IV) cannula at baseline and at 3.5,15, 20, 30, 40, 60, 90,120,180 and 240 minutes post-dose. Pharmacokinetic data [maximum concentration (Cmax), time to maximum plasma concentration (Tmax), biological half life (t1/2), area under the Curve (AUC)] are analysed using two-compartment analysis.

Secondary outcome measures

Tolerability of midazolam nose spray (50 mg/mL formulation) - Subjects are instructed to inform the investigator of any untoward effects occuring during the study, including both local adverse events and systemic adverse events. Major expected side effects, like drowsiness and local burning feeling, were registered by a Visual Analogue Scale (VAS) form 0 = no complaint at all to 100 = worst complaint possible, others were described.

Overall trial start date


Overall trial end date


Reason abandoned


Participant inclusion criteria

1. Age more than or equal to 18 years, either sex
2. American Society of Anesthesiology patient classification status (ASA) I and II

Participant type


Age group




Target number of participants


Participant exclusion criteria

1. Allergy to benzodiazepines
2. Acute or chronic nasal problems like rhinitis or sinusits
3. Use of benzodiazepines or grapefruit was prohibitied for a week prior to the research

Recruitment start date


Recruitment end date



Countries of recruitment


Trial participating centre

P. Debyelaan 25
6229 HX

Sponsor information


Maastricht University Medical Centre (Netherlands)

Sponsor details

P.Debeyelaan 25
6229 HX

Sponsor type




Funder type


Funder name

Maastricht University Medical Centre (Netherlands)

Alternative name(s)

Funding Body Type

Funding Body Subtype


Results and Publications

Publication and dissemination plan

Not provided at time of registration

Intention to publish date

Participant level data

Not provided at time of registration

Results - basic reporting

Publication summary

2011 results in

Publication citations

  1. Results

    Veldhorst-Janssen NM, Fiddelers AA, van der Kuy PH, Theunissen HM, de Krom MC, Neef C, Marcus MA, Pharmacokinetics and tolerability of nasal versus intravenous midazolam in healthy Dutch volunteers: a single-dose, randomized-sequence, open-label, 2-period crossover pilot study., Clin Ther, 2011, 33, 12, 2022-2028, doi: 10.1016/j.clinthera.2011.10.012.

Additional files

Editorial Notes