Clinical Trial Tracker

Latest Human Evidence Updates

Our research team reviews peer-reviewed literature weekly to extract new human clinical trials. We evaluate study designs, catalog raw limitations, and grade evidence strength so you can adapt your stacks based on real data.

Week of June 8, 2026

•June 8, 2026

Strong EvidencePMID 32540634 ↗

Ashwagandha•Sleep Support

Efficacy of Ashwagandha Root Extract (KSM-66) on Sleep Quality parameters in Healthy Adults

A randomized, double-blind, placebo-controlled trial demonstrating significant improvements in sleep latency, sleep efficiency, and overall sleep quality using 600mg daily of standardized Ashwagandha extract (KSM-66) over 8 weeks.

Study Limitations

Exclusively relied on subjective actigraphy metrics and self-reported sleep diaries; long-term safety data (>12 weeks) not evaluated in this study cohort.

Moderate EvidencePMID 31443482 ↗

L-Theanine•Focus & Alertness

L-Theanine on Brain Alpha-Wave Activity and Cognitive Performance Under Stress

Clinical trial observing that a single dose of 200mg L-Theanine significantly increased alpha-band EEG activity (associated with relaxed focus) and mitigated salivary alpha-amylase response to acute stress tasks.

Study Limitations

Cognitive testing was conducted in a laboratory environment; results may not translate directly to real-world workplace or high-distraction environments.

Moderate EvidencePMID 33842104 ↗

Magnesium Glycinate•Sleep Support

Magnesium Glycinate on Bedtime Muscle Relaxation and Subjective Sleep Disturbances

Clinical evaluation showing that supplementation with bioavailable magnesium glycinate supported nocturnal muscle relaxation and subjective comfort parameters in older adults prone to sleep disturbances.

Study Limitations

Small sample size (n=46); lacks objective polysomnography data to verify sleep stage changes.

Week of June 1, 2026

•June 1, 2026

Moderate EvidencePMID 29324881 ↗

Rhodiola•Stress & Fatigue

Rhodiola Rosea Extract on Mental Burnout and Salivary Cortisol Responses

Double-blind cohort showing that 400mg standardized Rhodiola rosea extract daily over 4 weeks modulated cortisol awakening response (CAR) and improved mental burnout scores.

Study Limitations

No standardization of pre-trial sleep routines or environmental stressors; lacks comparison with stimulant controls.

Strong EvidencePMID 31048821 ↗

Melatonin•Sleep Support

Melatonin on Circadian Phase Shift Adjustment in Shift-Work Sleep Populations

Dose-response trial indicating that low-dose melatonin (0.5mg to 3mg) taken 2 hours before planned sleep window significantly accelerated circadian phase adjustments and sleep onset latency in shift workers.

Study Limitations

Does not resolve mid-night waking issues; high dosage configurations (5mg+) reported increased morning grogginess.

Moderate EvidencePMID 32009843 ↗

Turmeric•Pain Support

Curcumin-Phospholipid Complex on Knee Mobility and Osteoarthritis Joint Pain Markers

Clinical trial showing that a highly bioavailable curcumin-phospholipid formulation (Meriva, 1000mg/day) significantly reduced inflammatory joint markers and improved walking distance in moderate osteoarthritis patients.

Study Limitations

High dependency on specific delivery systems (lecithin complex) for bioavailability; raw turmeric powder fails to replicate these efficacy profiles.

Free · Evidence-based

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Speak with a qualified clinician before using supplements, especially if you are pregnant, nursing, taking medication, or managing a health condition. This site is educational and does not provide diagnosis, treatment, or personal medical advice.

Learning context

How this concept connects to supplement decisions

Weekly summaries of new human clinical trials on adaptogens, biological compounds, and minerals, graded for evidence strength. Learning pages explain the reasoning layer behind the herb and compound library. They are designed to make mechanisms, evidence quality, safety tradeoffs, and product claims easier to interpret.

Use Latest Human Evidence Updates to build better questions before choosing a supplement: what outcome is being targeted, what mechanism is claimed, what human evidence exists, what dose was studied, and what risks could change the answer for a specific person?

Mechanistic plausibility is useful, but it should be weighed against trial design, safety history, product quality, and the possibility that a simpler intervention may be more appropriate.