Study to Learn About Relapse Prevention of Hypericumextract (a Drug Based on the Plant St. John Wort) in Outpatients Suffering From Moderate Depressive Episodes
Study to Learn About Relapse Prevention of Hypericumextract (a Drug Based on the Plant St. John Wort) in Outpatients Suffering From Moderate Depressive Episodes
The researchers in this trial want to learn more about the drug Laif® 900 in preventing the
 return of signs and symptoms of depressions (also called relapse) in patients suffering from
 moderate depression episodes. The study drug Laif® 900 is based on Hypericumextract made from
 the plant St. John wort. Patients will be accepted to take part in the study if they have
 20-24 points on the Hamilton Depression Rating Scale (HAM-D) which is a questionnaire helping
 the doctor to rate the severity of the depression and includes questions on patient's mood,
 sleep difficulties, agitation, anxiety and weight loss. About 400 patients will be enrolled
 into the first part of the study and will be treated for 12 weeks with Laif® 900 capsule once
 daily. Only patients with an improved HAM-D score by 50% will stay in the study and continue
 with the second part of the study which will last for 24 weeks.

 In this second part of the study patients will receive either Laif® 900 capsule once daily or
 an inactive tablet (placebo). Neither the treating doctor nor the patient will know which
 patient receives the Laif® 900 or placebo. At the end of the study the researcher will assess
 the effectiveness of the study drug in prevention relapse of depression episodes and will
 also have more information on the safety of the study drug.
Inclusion Criteria:

 Study Phase 1:

 -  Age 18-70 years

 -  Diagnosis according to DSM-IV-TR: 296.32: Outpatients with a mediocre depressive
 episode requiring treatment for recurrent major depression

 -  At least 5 of the following symptoms must persist for 2 weeks, with at least one of
 the main symptoms:

 -  Depressed mood (main symptom)

 -  Loss of interest or pleasure (main symptom)

 -  Significant weight loss without diet or weight gain

 -  Increased sleep or insomnia

 -  Psychomotor restlessness or slowing down

 -  Excessive, inappropriate guilt or feelings of worthlessness on almost every day

 -  Subjective or observable diminished ability to think and to decide

 -  Fatigue and loss of energy

 -  Suicidal thoughts and / or actions

 Study Phase 2:

 -  Phase 1 responders (= Phase 1 patients who have at least a 50% decrease in the HAMD-17
 total score after 12 weeks of Laif® 900 therapy).

 Exclusion Criteria: General (phase 1 and phase 2)

 -  Unable to work and patients cared for according to the BtG (working group "Stay") and
 "Medical Measures")

 -  Simple mourning reaction

 -  Clinically relevant laboratory abnormalities due to severe organ and systemic diseases

 -  Taking immunosuppressants (eg after organ transplants)

 -  Taking oral contraceptives with low levels of hormones (estrogen ≤ 50 μg, micropillus)

 -  Thyroid dysfunction (patients with non-euthyroid TSH levels)

 -  Known intolerance to the test medication

 -  Known photosensitivity

 -  Diabetes mellitus type I and II requiring treatment

 -  Unstable hypertension

 -  Pregnancy or breastfeeding

 -  Cancer and AIDS patients (HIV-positive)

 -  Alcohol, drug or drug abuse in the last 6 months

 -  Coadministration with coumarin-type anticoagulants

 -  History of epilepsy

 -  Melanoma

 -  Specific psychotherapy in the last 2 months and during the clinical trial

 -  Participation in a clinical trial within the last 30 days

 -  Simultaneous participation in another clinical trial

 -  Compliance and protocol management are not guaranteed by language problems