Clinical trial • Phase III • Psychiatry

LAVENDER OIL for Major depressive disorder (mild to moderate) | Major depression

Phase III trial of LAVENDER OIL for Major depressive disorder (mild to moderate) | Major depression.

Overview

Trial Therapeutic Area
Psychiatry
Trial Disease
Major depressive disorder (mild to moderate) | Major depression
Trial Stage
Phase III
Drug Modality
Other

Key dates

Initial CTIS Submission Date
07-07-2025
First CTIS Authorization Date
06-10-2025

Trial design

Randomised, silexan 80 mg once daily (oral) versus placebo (matched placebo).-controlled Phase III trial in Germany, Austria.

Randomised
Yes
Comparator
Silexan 80 mg once daily (oral) versus placebo (matched placebo).
Target Sample Size
500
Trial Duration For Participant
56

Eligibility

Recruits 500 Vulnerable population selected: participants have major depressive disorder (mental disorder). Written informed consent required from participant. Participants must be able to read, understand and complete questionnaires; those unable to do so are excluded. No procedures for parental consent or assent (trial enrols adults ≥18 years). Patient information / ICF available in English and German (patient-facing documents listed)..

Pregnancy Exclusion
Positive pregnancy test during Visit 1. Pregnancy, planning of pregnancy or lactation. Persons capable of childbearing if not using highly effective contraception; these include: • Oral, intravaginal, transdermal combined (oestrogen and progestogen containing) hormonal contraception • Oral, injectable and implantable progestogen-only hormonal contraception • Intrauterine device • Intrauterine hormone-releasing system • Bilateral tubal occlusion • Vasectomised partner • Sexual abstinence (referring to heterosexual relationships)
Vulnerable Population
Vulnerable population selected: participants have major depressive disorder (mental disorder). Written informed consent required from participant. Participants must be able to read, understand and complete questionnaires; those unable to do so are excluded. No procedures for parental consent or assent (trial enrols adults ≥18 years). Patient information / ICF available in English and German (patient-facing documents listed).

Inclusion criteria

  • {"criterion_text":"- Age of at least 18 years.\n- Diagnosis of a major depressive episode according to ICD-10 (single episode: F32.0, 32.1, recurrent episode: F33.0, 33.1) of mild to moderate severity with a duration of at least 2 weeks but not longer than one year.\n- MADRS total score for the inclusion in the run-in and into the active treatment phase: 17–30.\n- Outpatient treatment by a general or specialised physician.\n- Body weight: Body Mass Index (BMI) between 18 and 35 kg/m2.\n- Written informed consent in accordance with the legal requirement.\n- Readiness and ability on the part of the participant to comply with the physician’s instructions and to fill in the self-assessment scales."}

Exclusion criteria

  • {"criterion_text":"- Participation in a further clinical trial at the same time or in the last 12 weeks before screening.\n- Gastrointestinal disorders with uncertain absorption of orally administered drugs (e.g. partial or total gastrectomy, enterectomy, inflammatory bowel disease, celiac disease, symptomatic lactose intolerance, other disorders associated with chronic diarrhoea).\n- Unable to read, understand and/or complete questionnaires.\n- Diagnosis of MDD of severe severity as defined by ICD-10 (single episode: F32.2, recurrent episode: F33.2) or rating of the MADRS total score > 30 at screening or baseline visit.\n- History or suspicion of unreliability, poor cooperation or non-compliance with medical treatment.\n- Any clinically important psychiatric or neurological diagnoses according to ICD-10, other than trial indication, within 6 months before the trial such as: • Schizophrenia (F20.-), • Acute anxiety disorder (F41.-) • Episodes of depression with any characteristics of a psychotic nature (F32.3, F33.3), depressive disorders not defined as inclusion criteria (F34.1, F32.9), bipolar disorder (F31.-), cyclothymia (F34.0), mania (F30.-), • Organic, including symptomatic, mental disorders (F00-F09), • Post-traumatic stress disorder (F43.10), •\tEating disorders (F50.-).\n- History or evidence of alcohol and/or substance abuse or dependence, particularly of sedatives, hypnotics and anxiolytics. (F10-F19).\n- Risk of suicide, or previous suicide attempt or clear display of auto-aggressive behaviour as defined (but not limited to) MADRS Item 10 “suicidal thoughts” score  2.\n- Lack of response to any adequate antidepressant therapy in the present episode of depression (adequate means  150 mg amitriptyline-equivalents per day or SSRI treatment during at least 6 weeks). Patients who are already well adjusted to an antidepressant therapy in the present episode may not be enrolled into this trial.\n- Any of the following treatments within 30 days before baseline visit: •\tAntidepressants •\tDepot neuroleptics •\tMonoamine oxidase (MAO) inhibitors •Pimozide •Benzodiazepines •Other psychotropic drugs •Intravenous methylene blue •Linezolid.\n- Unacceptability to discontinue or likelihood to need medication during the trial that is prohibited as concomitant treatment (see section 10.2). The following medication is not allowed during the trial: • Any psychotropic drugs including o benzodiazepines, tranquilizer, antidepressants, anxiolytics, antiepileptics, MAO inhibitors, pimozide, lamotrigine, linezolid, intravenous methylene blue o non-benzodiazepines (exception: ≤ 10 mg zolpidem/day for not longer than 10 days during the trial) o neuroleptics (exception: ≤ 75 mg melperone/day for not longer than 10 days during the trial). However, NO exception for zolpidem and for melperone is allowed within 5 days prior to any trial visit. • Long-term prophylactic treatment (e.g. lithium, carbamazepine) • Central-acting antihypertensive medication (guanethidine, guanoxan, clonidin, prazosine, α-methyldopa, reserpine) • Digoxin • Xanthine derivatives such as Theophylline • Antiparkinson medication • Phytopharmaceuticals with anxiolytic properties (e.g. hypericum extract, valerian extract) • Muscle relaxants • Analgesics of opiate type • Anaesthetics • Barbiturates • Nootropics • Coumarin derivates • Antibiotics.\n- History of hypersensitivity to lavender preparations and/or known allergies to the IMP, placebo or excipients.\n- Non-medicinal psychiatric treatment during the last 2 weeks prior to baseline visit and during the course of the trial (e.g. standardised and digital psychotherapy, sleep withdrawal, phototherapy, electroconvulsive therapy, digital health applications [DiGAs]).\n- Any unstable acute medical disorder or clinically relevant hepatic, renal, cardiovascular, respiratory, cerebrovascular, metabolic disorder or progressive diseases as cancer, haematologic diseases (including haemophilia, Christmas disease, von Willebrand’s disease, past medical history of bleeding gastric or duodenal ulcers or other significant bleeding disorders) or thyroid insufficiency (exception: non-insulin dependent diabetes mellitus, thyroid and anterior pituitary insufficiency on stable treatment), epilepsy or a history of seizure disorder or treatment with anticonvulsants for epilepsy or seizures, Parkinson’s disease.\n- Any somatic disease that necessitates regular treatment with systemic steroids.\n- Clinically significant abnormality of ECG and/or laboratory value(s) assessed at Screening Visit.\n- Any abnormal baseline finding considered by the investigator to be indicative of conditions that might affect trial results.\n- Positive pregnancy test during Visit 1.\n- Pregnancy, planning of pregnancy or lactation.\n- Persons capable of childbearing if not using highly effective contraception; these include: • Oral, intravaginal, transdermal combined (oestrogen and progestogen containing) hormonal contraception • Oral, injectable and implantable progestogen-only hormonal contraception • Intrauterine device • Intrauterine hormone-releasing system • Bilateral tubal occlusion • Vasectomised partner • Sexual abstinence (referring to heterosexual relationships)"}

Endpoints

Primary endpoints

  • {"endpoint_text":"- The change in MADRS total score between Baseline and Week 8.","definition_or_measurement_approach":"Change in Montgomery-Åsberg Depression Rating Scale (MADRS) total score from Baseline to Week 8; MADRS total score used as primary efficacy measure."}

Secondary endpoints

  • {"endpoint_text":"- Efficacy endpoint: • Changes from Baseline in Clinical Global Impressions (CGI) (Item 1), Patient Health Questionnaire-9(PHQ-9) total score, Sheehan Disability Scale (SDS) total score at Week 8","definition_or_measurement_approach":"Changes from Baseline to Week 8 in CGI Item 1, PHQ-9 total score, and SDS total score."}
  • {"endpoint_text":"- Efficacy endpoint: • CGI (Item 2) at Week 8","definition_or_measurement_approach":"Clinical Global Impressions (CGI) Item 2 assessed at Week 8."}
  • {"endpoint_text":"- Efficacy endpoint: • At least 50% reduction of MADRS total score between Baseline and Week 8 (responder)","definition_or_measurement_approach":"Responder defined as ≥50% reduction in MADRS total score from Baseline to Week 8."}
  • {"endpoint_text":"- Efficacy endpoint: • MADRS total score < 10 at Week 8 (remitter).","definition_or_measurement_approach":"Remission defined as MADRS total score < 10 at Week 8."}
  • {"endpoint_text":"- Safety endpoint:• Frequency of participants with at least one Adverse Event (AE),Adverse Drug Reaction (ADR), serious AE; number, type, severity and seriousness of AEs, and their relationship to the Investigational Medicinal Product (IMP); frequency of participants with AEs leading to withdrawal","definition_or_measurement_approach":"Safety assessed by recording frequency, type, severity and relatedness of AEs/ADRs/serious AEs and AEs leading to withdrawal."}
  • {"endpoint_text":"- Safety endpoint:• Evaluation of safety assessments (physical examination, vital signs, 12-lead electrocardiography (ECG), laboratory evaluation, concomitant medication, non-medicinal psychiatric treatment)","definition_or_measurement_approach":"Safety assessments include physical exam, vital signs, 12-lead ECG, laboratory tests, concomitant medication and non-medicinal psychiatric treatments."}
  • {"endpoint_text":"- Safety endpoint:• Risk of suicide","definition_or_measurement_approach":"Assessment of suicide risk (e.g., MADRS Item 10 and other safety assessments)."}

Recruitment

Digital Remote Recruitment
Yes
Planned Sample Size
500
Recruitment Window Months
20
Consent Approach
Written informed consent required from each participant (participants must be ≥18 years). Subject information and informed consent forms (L1_SIS and ICF Main and Pregnant Partner) available for publication; patient-facing documents present in English and German. Participants must be able to read, understand and complete questionnaires as a condition of participation.

Methods

  • Flyers (pharmacies) — recruitment materials titled 'K2_Recruitment material flyer pharmacies' and similar (documents associated with Part II entries).
  • Online advertisement — documents include 'K2_Recruitment material online advertisement Velocity sites' indicating online ads on Velocity sites.
  • Online and print media recruitment material for Sitework sites — document 'K2_Recruitment material online and printmedia recruitment material Sitework sites'.
  • Prescreening toolkit questions for Pratia sites — document 'K2_Recruitment material prescreening toolkit questions Pratia sites'.
  • Advertisements for Pratia and FutureMeds/Siteworks sites — multiple 'K2_Recruitment material advertisement' documents for specific site operators.

Geography

Total Number Of Sites
36
Total Number Of Participants
500

Germany

Earliest CTIS Part Ii Submission Date
04-09-2025
Latest Decision Or Authorization Date
27-02-2026
Processing Time Days
176
Number Of Sites
33
Number Of Participants
450

Sites

Site Name
Siteworks GmbH
Contact Person Name
Julia Chevts
Contact Person Email
info@siteworks-studien.de
Site Name
Siteworks GmbH
Contact Person Name
Niels-Christian Höllger
Site Name
Klinische Forschung Schwerin GmbH
Contact Person Name
Christine Paschen
Site Name
Gemeinschaftspraxis PD Dr. med. habil. Holger Kittner & Dr. Hartig
Contact Person Name
Holger Kittner
Contact Person Email
Praxis-Kittner-Hartig@gmx.de
Site Name
MVZ Medic-Center Nürnberg Studienzentrum
Contact Person Name
Norbert Schöll
Contact Person Email
info@mediccenter.de
Site Name
Studienzentrum Dr. med. Markus Faghih
Contact Person Name
Markus Faghih
Contact Person Email
info@bocholder-hausaerzte.de
Site Name
Studienzentrum Mainz Mitte
Contact Person Name
Stefan Regner
Contact Person Email
info@hausarzt-in-mainz.de
Site Name
Medizinisches Versorgungszentrum (MVZ) Dachau
Department Name
Studienabteilung
Contact Person Name
Karl Wilhelm
Contact Person Email
kontakt@dachau-med.de
Site Name
Klinische Forschung Hamburg GmbH
Contact Person Name
Christian Deckert
Site Name
Neuromed Campus
Contact Person Name
Gereon Nelles
Contact Person Email
praxis@neuromed-campus.de
Site Name
Ambenet GmbH Das Ambulante Behandlungsnetz
Contact Person Name
Hans-Detlev Stahl
Contact Person Email
info@ambenet.de
Site Name
Velocity Clinical Research Germany GmbH
Contact Person Name
Mauricio Sendeski
Contact Person Email
privacy@VelocityClinical.com
Site Name
Velocity Clinical Research Germany GmbH
Contact Person Name
Kulkarni Sameer
Contact Person Email
privacy@VelocityClinical.com
Site Name
Gemeinschaftspraxis Dres. Grosskopf
Contact Person Name
Josef Großkopf
Contact Person Email
info@drs-grosskopf.de
Site Name
Emovis GmbH
Contact Person Name
Luci Magimaiseelan
Contact Person Email
info.de@futuremeds.com
Site Name
Klinische Forschung Hannover-Mitte GmbH
Contact Person Name
Jan Wagner
Site Name
Praxis Schriek - Gesund im Kreuzviertel
Contact Person Name
Carsten Schriek
Contact Person Email
praxis@dr-schriek.de
Site Name
Siteworks GmbH
Contact Person Name
Annemone Köchel
Contact Person Email
info@siteworks-studien.de
Site Name
Hausarztzentrum Butendorf
Contact Person Name
Stefan Schaub
Contact Person Email
info@hausarztzentrum.de
Site Name
NeuroCentrum am Kreiskrankenhaus
Contact Person Name
Monika Köchling
Contact Person Email
post@neuro-centrum.net
Site Name
Kai Gastl
Contact Person Name
Kai Gastl
Contact Person Email
info@praxis-gastl.de
Site Name
Pharmakologisches Studienzentrum Chemnitz GmbH
Contact Person Name
Ralf Bodenschatz
Site Name
NeuroPoint Gesellschaft fur vorbeugende Gesundheitspflege GmbH
Contact Person Name
Daniela Rau
Contact Person Email
org@neuropoint.de
Site Name
Emovis GmbH
Contact Person Name
Reinhard Stöhring
Contact Person Email
info.de@futuremeds.com
Site Name
Zentrum fuer klinische Forschung Dr. I. Schoell GmbH
Contact Person Name
Elvira Steidl
Contact Person Email
info@forschung-badhomburg.de
Site Name
Studienzentrum FMZ Radowsky
Contact Person Name
Frank Radowsky
Contact Person Email
info@privatpraxis-leipzig.de
Site Name
Siteworks GmbH
Contact Person Name
Ulrike Lengler
Contact Person Email
hannover@siteworks-studien.de
Site Name
Kallmann Neurologie Neurologische Praxis
Department Name
Neurologische Praxis
Contact Person Name
Boris Kallmann
Contact Person Email
post@neurologie-bamberg.com
Site Name
Velocity Clinical Research Germany GmbH
Contact Person Name
Anastasia Kelidou
Contact Person Email
privacy@VelocityClinical.com
Site Name
Universitaetsklinikum Jena KöR
Department Name
Department of Psychiatry and Psychotherapy
Contact Person Name
Martin Walter
Contact Person Email
psychiatrie@med.uni-jena.de
Site Name
Velocity Clinical Research Germany GmbH
Contact Person Name
Thomas Müller
Contact Person Email
privacy@VelocityClinical.com
Site Name
medicoKIT GmbH
Contact Person Name
Thorsten Krause
Contact Person Email
buero@medicokit-goch.de
Site Name
Klinische Forschung Karlsruhe GmbH
Contact Person Name
Alla Reimer
Site Name
Analyze & Realize GmbH
Contact Person Name
Liana Vismane
Contact Person Email
info@a-r.com
Site Name
Gemeinschaftpraxis Dres. Med Blersch/Redelstein
Contact Person Name
Wendelin Blersch
Contact Person Email
praxis@neuroamdom.de
Site Name
Klinische Forschung Dresden GmbH
Contact Person Name
Petra Peschel
Site Name
Klinische Forschung Berlin-Mitte GmbH
Contact Person Name
Frank Zollmann
Site Name
Velocity Clinical Research Germany GmbH
Contact Person Name
Tanja Finsterbusch
Contact Person Email
privacy@velocityclinical.com

Austria

Earliest CTIS Part Ii Submission Date
04-09-2025
Latest Decision Or Authorization Date
19-04-2026
Processing Time Days
227
Number Of Sites
3
Number Of Participants
50

Sites

Site Name
Medizinische Universitaet Innsbruck
Department Name
, Allgemeine Psychiatrische Ambulanz
Contact Person Name
Laurin Mauracher
Contact Person Email
mui-oversight@i-med.ac.at
Site Name
Universitätsklinik für Psychiatrie, Psychosomatik und Psychotherapie
Department Name
Klinische Abteilung für Psychiatrie und Psychotherapeutische Medizin
Contact Person Name
Eva Reininghaus
Site Name
Universitätsklinikum St.Pölten
Department Name
Psychiatrie & psychotherapeutische Medizin
Contact Person Name
Gernot Fugger
Contact Person Email
psychiatrie@stpoelten.lknoe.at

Sponsor

Primary sponsor

Full Name
Dr. Willmar Schwabe GmbH & Co. KG
Organisation Type
Pharmaceutical company
Country Of Registered Address
Germany

Contract research organisations

Name
AMS Advanced Medical Services GmbH
Responsibilities
Multiple sponsor duties including regulatory submission and operational roles (codes: 1,10,11,15 'Regulatory submission',2,5,6,7)
Name
Glatt Pharmaceutical Services GmbH & Co. KG
Responsibilities
IMP distribution to sites (sponsorDuties code 15)
Name
Labor Dr. Spranger
Responsibilities
Laboratory services (sponsorDuties code 4)

Third parties

  • {"country":"Germany","full_name":"Labor Dr. Spranger","duties_or_roles":"sponsorDuties codes: 4","organisation_type":"Laboratory/Research/Testing facility"}
  • {"country":"Germany","full_name":"AMS Advanced Medical Services GmbH","duties_or_roles":"sponsorDuties codes: 1, 10, 11, 15 (Regulatory submission), 2, 5, 6, 7","organisation_type":"Pharmaceutical company"}
  • {"country":"Germany","full_name":"Glatt Pharmaceutical Services GmbH & Co. KG","duties_or_roles":"sponsorDuties code: 15 (IMP Distribution to sites)","organisation_type":"Pharmaceutical company"}

Investigational products

Investigational Product Name
Silexan 80 mg
Active Substance
LAVENDER OIL
Modality
Other
Routes Of Administration
ORAL USE
Route
oral
Authorisation Status
Authorised (prodAuthStatus: 1)
Starting Dose
80 mg
Dose Levels
80 mg
Frequency
once daily
Maximum Dose
80 mg/day
Investigational Product Name
Placebo to Silexan 80 mg
Modality
Other

Related trials

Other published trials that may interest you.