Legacy AI grade · Sources dated 2026-06-09. Not expert reviewed. Coverage is limited to the listed sources. About the new summary workflow
Schisandra for Cognitive Function
Verdict: Taiwan Regulatory Restriction
Across 2 PubMed studies, the evidence for Schisandra in Cognitive Function grades Tier U — unverified / insufficient.
U ⚫ U Unverified Taiwan Regulatory Restriction
Why this grade7-layer evidence engine
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Scoring transparency
All scores computed by a 7-layer evidence engine — fully auditableRaw score 0.45
D
C
B
A
S
← counter-evidence / ineffectiveeffective / strong evidence →
Final grade
U · Taiwan Regulatory Restriction
Confidence
47%
Conflicting evidence
Evidence level
E10
Mechanism / case reports / no human evidence
▸View the full decision path (audit trail)
- compute_raw_score — 加權公式: L2×0.30 + L3×0.25 + L5×0.25 + L11×0.10 + L1×0.10 = 0.453
- tier_from_score — 依分數區間映射至 tier letter
- apply_hec_rules — 僅有 E10 級證據 (cohort/animal/mechanism)，不足以下結論
- tier_strict_requirement_check — C 級條件未達 (需 E1-E8；實際 E10 僅機轉)
- detect_disputes — 偵測到 0 個 hard + 0 個 soft dispute
- decide_status — 依 tier + dispute 結果決定 status
PubMed studies (2)L2 · primary research & systematic reviews
An overview of neuroprotective and cognitive enhancement properties of lignans from Schisandra chinensis
Finding: Review concludes crude extracts and isolated lignans protect against neuronal cell damage and enhance cognitive performance in preclinical models; no human RCT data presented.
View on PubMed Schizandrin, an antioxidant lignan from Schisandra chinensis, ameliorates Abeta1-42-induced memory impairment in mice
Finding: Schizandrin significantly improved Abeta1-42-induced memory deficits and raised brain antioxidant enzyme activity in mice; positioned as a potential cognitive enhancer via antioxidative action.
View on PubMed