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Head-to-head evidence comparison — which supplement is right for you?
Passionflower wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
4 of 4 studies with measurable effects showed benefit.
Top outcomes
Verdict
Mixed evidence
2 of 6 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Passionflower and Reishi have evidence — compare verdict strength side-by-side.
250-500mg extract (or 2g dried herb)
For anxiety: as needed, For sleep: 30-60 minutes before bed
Standardized extract capsules
1-3g dried mushroom or 500-1500mg extract
Evening (for sleep), With or without food
Dual-extract (water + alcohol) capsules or powder
30 min - 2 hours
30-60 minutes
30-60 minutes
4-8 weeks
2-4 weeks
4-8 weeks
Herbal Remedies and Their Possible Effect on the GABAergic System and Sleep
Nutrients (2021) · Systematic review
Gamma-aminobutyric acid (GABA) is an inhibitory neurotransmitter that plays a major role in controlling different vigilance states.
Passiflora incarnata in Neuropsychiatric Disorders-A Systematic Review
Nutrients (2020) · Systematic review
Passiflora incarnata may be helpful in treating some symptoms in neuropsychiatric patients.
Herbal medicine for depression and anxiety: A systematic review with assessment of potential psycho-oncologic relevance
Phytotherapy research : PTR (2018) · Systematic review
Overall, 45% of studies reported positive findings with fewer adverse effects compared with conventional medications.
Identifying immunostimulatory herbal supplements that may flare autoimmune skin diseases: a systematic scoping review
Lupus science & medicine (2025) · Systematic review · n=469
We identified 227 herbal supplements with immunostimulatory properties, of which 15 were most strongly supported by the evidence.
Ganoderma lucidum (Reishi) an edible mushroom; a comprehensive and critical review of its nutritional, cosmeceutical, mycochemical, pharmacological, clinical, and toxicological properties
Phytotherapy research : PTR (2021) · Systematic review
In particular, quality clinical data are intensely needed to support pharmacological activities for human use.
Use of Ganoderma lucidum (Ganodermataceae, Basidiomycota) as Radioprotector
Nutrients (2020) · Meta analysis
From a total number of 1109 records identified, 15 full text articles were eligible, none of them were clinical trials.
Based on meta-analysis of 198 subjects noting insufficient RCT data for definitive conclusions. Effectiveness limited by small sample sizes and study quality limitations. Drowsiness is primary dose-limiting side effect.
Based on systematic reviews identifying immunostimulatory properties. Meta-analysis for cancer adjuvant therapy showed positive immune response (RR 1.50). Quality clinical data still needed. Effect varies significantly by extract type and standardization.
AI-estimated from published studies. Interpret as directional guidance.
Passionflower has a higher evidence score (8/10 vs 7/10) and wins in 2 of 3 categories.
For reduce anxiety & stress, Passionflower has a higher relevance score (85 vs 60).
No known interactions between Passionflower and Reishi have been documented in our database. However, always consult a healthcare provider before combining supplements.