About this trial
The primary purpose of the research is to evaluate in healthy adults the time course effects of varying dosages of Lion's mane mushroom on attention and mood.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Participants must self-assess themselves as being in good health
Participants must be aged 18 to 45 at the time of giving consent
Understand and are willing to participate in all scheduled visits and to adhere to the trial procedures outlined in the subject information sheet
Are fluent in English (equivalent to IELTS Level 6)
Disqualifiers
Have any pre-existing medical condition/illness which will impact taking part in the study. There may be other, unforeseen, exceptions and these will be considered on a case-by-case basis, i.e., participants may be allowed to progress to screening if they have a condition/illness which would not interact with the active treatments or impede performance so it's worth discussing any medical conditions with the researcher prior to booking lab appointments. NOTE: the explicit exceptions to this is controlled hayfever, asthma, hypo/hyperthyroidism, high blood pressure, high cholesterol, reflux.
Are currently taking prescription medications NOTE: the explicit exceptions to this are contraceptive treatments, and those taken 'as needed' in the treatment of asthma and hay fever. There may be other instances of medication use which, where no interaction with the active treatments is likely, and which would not be expected to have any impact on brain function, participants may be able to progress to screening.
Have a history of experiencing difficulty swallowing tablets including in capsule form
Have high blood pressure (systolic over 139 mm Hg or diastolic over 89 mm Hg)
Trial design
Crossover
Treatments tested in this trial
Lion's Mane fruiting bodies extract
Dietary supplementLion's Mane fruiting bodies extract (20:1 ratio)
Placebo
Dietary supplementMicrocrystalline cellulose
Treatment groups
Trial outcomes
Primary outcomes
Speed of Attention
Speed of Attention cognitive domain, calculated from reaction time (msec) performance on the following tasks: Choice Reaction Time, 4 Choice Reaction Time, Digit Vigilance, Arrow Flankers, Stroop, Rapid Visual Information Processing.
Secondary outcomes
Accuracy of Attention
Accuracy of Attention cognitive domain, calculated from accuracy of performance (%) on the following tasks: Choice Reaction Time, 4 Choice Reaction Time, Digit Vigilance, Arrow Flankers, Stroop, Rapid Visual Information Processing.
Choice Reaction Time
Administered by the cognitive battery Computerised Mental Performance Assessment System (COMPASS). Measuring attention and vigilance. Choice Reaction Time (% accuracy, reaction time (msec)). With higher accuracy and quicker reaction time indicating better performance.
4 Choice Reaction Time
Administered by the cognitive battery Computerised Mental Performance Assessment System (COMPASS). Task assesses attention and vigilance. 4 Choice Reaction Time (% accuracy, reaction time (msec)). With higher accuracy and quicker reaction time indicating better performance.
Digit Vigilance
Administered by the cognitive battery Computerised Mental Performance Assessment System (COMPASS). Task assesses attention and vigilance. Digit Vigilance (% accuracy, reaction time (msec), false alarms). With higher accuracy, lower false alarms and quicker reaction time indicating better performance.
Sponsors and contacts
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