Testing L-methylfolate for generalized anxiety disorder
Official title: Adjunctive Treatment With L-methylfolate for Treatment-Resistant Generalized Anxiety Disorder: a Pilot Study
PSIY-744-23: Adjunctive Treatment With L-methylfolate for Treatment-Resistant Generalized Anxiety Disorder: a Pilot Study
Interventions
L-methylfolate
Oral administration of L-methylfolate 15 mg per day for 8 weeks. The study drug will be given in addition to the standard of care (SOC) for GAD.
Canadian Sites (1)
Kingston Health Sciences Centre
Kingston, Ontario, Canada
Eligibility Criteria
See who this study is looking for10 criteria
The trial’s own eligibility text, word for word from the registry. Only the trial site can say who takes part.
Inclusion
- +Patients on a stable dose of an selective serotonin uptake inhibitors (SSRI) or serotonin and noradrenaline reuptake inhibitors (SNRI) for at least 8 weeks.
- +Treatment-resistant GAD, defined by lack of response to at least two drugs, from two different classes of drugs considered first-line or second-line for GAD according to the Canadian Clinical Practice Guidelines for the Management of Anxiety, Posttraumatic Stress and Obsessive-Compulsive Disorders (Katzman et al., 2014). Only trials lasting at least 8 weeks and with at least the minimum effective dose of the given medication will be considered failed trials.
Exclusion
- −Patients with moderate to severe major depressive disorder based on the Patient Health Questionnaire - Nine Item (PHQ-9) scale (score of 15 or above) at baselineBaselineYour starting measurements, taken before treatment begins.Read more →.
- −Mini International Neuropsychiatric Interview version (MINI) 7.0 indicates moderate to high current suicidality or "suicide likely in near future" or current suicidal behavior disorder.
- −Patients diagnosed with obsessive-compulsive disorder (OCD), bipolar disorder, schizophrenia, schizoaffective disorder, personality disorders, substance use disorders, intellectual disabilities, dementia, epilepsy or other severe neurological diseases.
- −Patients with cardiovascular diseases, infections, inflammatory diseases, recent surgeries, recent physical trauma and other medical issues that could produce elevation of c-reactive protein (CRP) or homocysteine.
- −Consumption of cannabis, any cannabis by-products, illicit drugs, or alcohol above 3 drinks per week.
- −Supplementation of diet with vitamins or consumption of natural health products that may affect anxiety or depression symptoms.
- −Reading competence below Grade 5.
- −Participants who do not have capacity to conduct consentInformed consentThe process of being told what taking part involves, then choosing freely.Read more → process.
In plain language
Assembled directly from this trial’s registry record. Every sentence traces to a field below — nothing here is generated or interpreted.
What this study is
This study does not fall into the standard research categories.
Phase 4Phase 4A study of a treatment that is already approved and in use.Read more → — a study of a treatment already approved for use, following it in everyday practice.
What is being given or done in this study: L-methylfolate.
From the trial registry
Built from these fields:
- designModule.designInfo.primaryPurpose
- designModule.phases
- armsInterventionsModule.interventions[].name
How the study is run
There is only one group in this study, so there is no assignment to different treatments.
This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.
From the trial registry
Built from these fields:
- designModule.designInfo.allocation
- designModule.designInfo.maskingInfo.masking
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
There is one group in this study.
From the trial registry
Built from this field:
- armsInterventionsModule.armGroups[].type
Who the study is looking for
The study lists an age range of 18 years to 65 years.
The study is open to people of any sex.
The study does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
These are the criteria the study lists. Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part.
From the trial registry
Built from these fields:
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How big and how long
The study aims to enrol about 10 people.
The study is currently expected to finish around May 2026.
The main measurement is taken over: Throughout the study, 8 weeks.
From the trial registry
Built from these fields:
- designModule.enrollmentInfo.count
- statusModule.completionDateStruct.date
- outcomesModule.primaryOutcomes[].timeFrame
What the study measures
Incidence of treatment-emergent adverse eventsAdverse eventAny medical problem that happens during a study, whether or not the treatment caused it.Read more → — measured over Throughout the study, 8 weeks.
Incidence of treatment-emergent side effectsSide effectAn unwanted effect thought to be caused by the treatment itself.Read more → measured with the ASEC — measured over Baseline visitBaselineYour starting measurements, taken before treatment begins.Read more →, 4-week visit and 8-week visit.
Response to treatment defined by CGI-I score below 3 — measured over 4-week visit and 8-week visit.
From the trial registry
Built from these fields:
- outcomesModule.primaryOutcomes[].measure
- outcomesModule.primaryOutcomes[].timeFrame
Source: NCT06218030 on ClinicalTrials.gov. The full registry text is further down this page — this summary never replaces it.
Not medical advice. What do these terms mean?
What is being tested — in plain terms
About L-methylfolateDrug
Oral administration of L-methylfolate 15 mg per day for 8 weeks. The study drug will be given in addition to the standard of care (SOC) for GAD.
From the trial registry — its own words, unedited.
What a drug is here: A medicine — a chemical or small-molecule treatment — given as the thing being studied.
Read the full explanation → · in clinical review
Common questions
Answered from this trial’s registry record. Where the record doesn’t say, these answers say so rather than filling the gap.
Am I eligible for this trial?
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part. Concord cannot make that determination, and neither can any tool that has not examined you.
What the study lists: an age range of 18 years to 65 years.
The full inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more → and exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → are published on this page, exactly as the study team wrote them.
The useful next step is to bring this trial to your doctor. Answering a few questions first gives them something concrete to review.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.eligibilityCriteria
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
From the trial registry
- armsInterventionsModule.armGroups[].type
Would I know which treatment I am getting?
This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.
There is only one group in this study, so there is no assignment to different treatments.
From the trial registry
- designModule.designInfo.maskingInfo.masking
- designModule.designInfo.allocation
Who can join?
The study lists an age range of 18 years to 65 years.
It is open to people of any sex.
It does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can confirm whether a particular person can take part.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How long would this take?
The study's main measurement is taken over: Throughout the study, 8 weeks.
The study as a whole is currently expected to finish around 2026-05-01.
How long any one person takes part can differ from the study length. The study team can tell you what the schedule looks like in practice.
From the trial registry
- outcomesModule.primaryOutcomes[].timeFrame
- statusModule.completionDateStruct.date
How many people are taking part?
The study aims to enrol about 10 people.
From the trial registry
- designModule.enrollmentInfo.count
Where is this happening?
This study lists one location: Kingston, Ontario, Canada.
Sites can open and close during a study, so confirm with the team before travelling.
From the trial registry
- trial_locations
About This Trial
The goal of this feasibility study is to determine the tolerability and safety of add on treatment with L-methylfolate in patients with treatment-resistant generalized anxiety disorder (GAD). The primary objective is to monitor for side effects and other risks associated with the treatment. Secondary objectives are to compare the severity of symptoms, serum levels of folate, vitamin B12, C-reactive protein, homocysteine, tumor necrosis factor alpha and interleukin 6 before and after treatment. Participants will continue with their usual treatment for GAD and receive add on treatment with L-methylfolate 15 mg per day for 8 weeks. All participants will receive the same intervention.
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See if this trial could fit youThis page is for informational purposes only and does not constitute medical advice. Clinical trial eligibility can only be determined by the trial site after proper screening. Trial information is sourced from ClinicalTrials.gov and may not reflect the most current status. Always consult your healthcare provider before making decisions about clinical trial participation.