Condition category
Not Applicable
Date applied
Date assigned
Last edited
Retrospectively registered
Overall trial status
Recruitment status
No longer recruiting

Plain English Summary

Background and study aims
Eugenol is a natural chemical substance which is used as a spice and flavouring in a wide variety of consumer products including in so-called kretek (clove) cigarettes to which this spice is added. So far, very little is known about how the human body takes up and gets rid of eugenol. To clarify this point, we want to develop and validate a method for detecting eugenol and its degradation products in human urine.

Who can participate?
Non-smokers who do not have any health problems can participate in this study.

What does the study involve?
During the study, participants will be asked to collect their urine samples over a period of 24 hours after having a eugenol-free diet. Similarly a further 24 hours urine sample will be collected after the same participants have had eugenol-rich food. For assessing your health a small amount of blood (about 15 mL) will be taken at the initial examination. Additional blood samples during the study are not expected but may be taken for medical reasons.

What are the possible benefits and risks of participating?
In general, no side effects are expected; the substance to be examined (eugenol) is supplied with normal food in the form of natural additives such as spices and flavours. Occasionally, however, gastrointestinal (digestive system) symptoms can occur if your body is not used to these spices, flavours or additives. The skin puncture for blood sampling may give rise to a bruise, local irritation or swelling. In very rare cases it can lead to infection, damage to nerve injury or swelling of the veins in the area of the injection site. Allergic reactions could occur after having eugenol in the diet. For this reason you can only participate in this study if you are not allergic to any foods or spices or have not had an allergic reaction in the past. Allergic reactions can occur in the form of redness, swelling, itching, fever, flushing, vomiting, breathing difficulties or massive circulatory failure. Participation in the study provides no health benefits or any other benefit for the participating subjects.

Where is the study run from?
The study is run from British American Tobacco (Investments) Ltd, UK.

When is study starting and how long is it expected to run for?
The study started in August 2013 and lasted for one month.

Who is funding the study?
British American Tobacco (Investments) Ltd, UK.

Who is the main contact?
Dr Chris Proctor

Trial website

Contact information



Primary contact

Dr Chris Proctor


Contact details

Chief Scientific Officer
British American Tobacco (Investments) Ltd.
GR&D Centre
Regents Park Road.
SO15 8TL
United Kingdom

Additional identifiers

EudraCT number number

Protocol/serial number


Study information

Scientific title

A single-centre, open-label study for the collection of urine samples as part of a method development and validation process for eugenol biomarkers in healthy male volunteers


Study hypothesis

The analytical methodology has the ability to detect eugenol metabolite in urine.

Ethics approval

Ethics Committee of Arztekramer Hamburg, Germany, 08/07/2013, ref: PV4511

Study design

Single-centre open-label one-way study

Primary study design


Secondary study design

Non randomised controlled 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


This study involves healthy adult never smokers to obtain information on biomarkers of exposure to eugenol in urine


The clinical study will be conducted in compliance with the ethical principles that have their origin in the Declaration of Helsinki and that are consistent with Good Clinical Practice (GCP). Participants will be required to read the Subject Information prior to providing their written consent by signing the informed consent form.

Collection of urine samples for the development of eugenol biomarker in urine.

Day 1: 08:00 am to next day, subjects consume a eugenol-free diet
Day 2: 08.00 am to 20:00 pm, subjects collect a urine sample, after 20.00 pm you will be given a eugenol-rich diet
Day 3: subjects collect urine samples for 12 hours

Safety assessments include documenting any reported adverse events. Any concomitant medications for the adverse event will also be documented on all study days, as well as a physical examination, the assessment of vital signs (blood pressure, pulse rate, body temperature), a 12-lead ECG, standard clinical laboratory assessments (urinalysis, hematology, clinical chemistry) and serology tests (HIV, hepatitis B and C) at screening.
A urine drug screen, a urine cotinine test and an alcohol breath test will be done at screening and at Day 1.The safety of the study participants will be monitored throughout the study.

Principal Investigator:
Werner Weber
Senior Medical Advisor
Momentum Pharma Services GmbH

Intervention type



Not Applicable

Drug names

Primary outcome measures

To quantify via GC-MS/MS method 'total' eugenol biomarker in 24 hours urine after treatment with glucuronidase/sulfatases

Secondary outcome measures


Overall trial start date


Overall trial end date


Reason abandoned


Participant inclusion criteria

1. Aged between ≥ 18 and ≤ 50 years
2. Body Mass Index (BMI) ≥ 18 and ≤ 30 kg/m² inclusive
3. Provide written informed consent
4. Subjects must be able to communicate well with the Investigator, to understand and comply with the requirements of the study, and be judged suitable for the study in the opinion of the Investigator
5. Non-smokers
6. Healthy male volunteers, as judged by a medical history, concomitant medication, physical examination, vital signs, 12-lead ECG and laboratory safety tests
7. HIV and Hepatitis B and C tests, taken within 21 days prior to the start of the study, must be negative
8. Willingness to avoid eugenol-containing foods (e.g., cola, curry, clove, cinnamon, nutmeg, basil, dill, star anise) and dental surgery products such as mouthwash 48 h prior to study start
9. Willingness to comply with specific diet restrictions during study course: eugenol-free diet (no cola, curry, clove, cinnamon, nutmeg, basil, dill, star anise) and eugenol-rich diet (cinnamon, curry, clove, bay leaves, turmeric, pumpkin bread, cola-type drinks and coffee)
10. No allergy against eugenol or against eugenol-containing food/spices like cola, curry, clove, cinnamon, nutmeg, basil, dill and star anise
11. Subject understands the study procedures and signs forms providing informed consent to participate in the study

Participant type


Age group




Target number of participants

The study would enrol 5 healthy adult non-smoking volunteers.

Participant exclusion criteria

1. History or presence of significant cardiovascular disease
2. Known allergy against any food
3. Existing gastrointestinal disorder
4. History of alcohol or drug abuse or a positive breath or urine test, respectively at screening and on Day 1
5. Subjects should not drink methylxanthine- and caffeine-containing drinks (e.g., cola, coffee) during the wash-out and eugenol-free diet phase
6. Clinically significant illness within 14 days prior to start of study
7. Participation in a clinical trial with an investigational drug within 8 weeks prior to the first dosing
8. Use of any prescription drug within 2 weeks before Day 1 and use of any OTC drug within 3 days before Day 1
9. Diet, which in the opinion of the Investigator, deviates from a normal diet (e.g., vegetarians may be acceptable, vegans are not acceptable)
10. Subjects who have urinary cotinine levels similar to that of smokers (≥30 ng/mL, levels ≥ 2 according to the NicAlert™ Scale)

Recruitment start date


Recruitment end date



Countries of recruitment


Trial participating centre

Chief Scientific Officer
SO15 8TL, UK
United Kingdom

Sponsor information


British American Tobacco (Investments) Ltd. (UK)

Sponsor details

GR&D Centre
Regents Park Road
SO15 8TL
United Kingdom
+44 (0) 2380 793715

Sponsor type




Funder type


Funder name

British American Tobacco (Investments) Ltd. (UK)

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

Publication citations

Additional files

Editorial Notes