Panax Ginseng ： Mental Fatigue

Q: Does Panax Ginseng help with Mental Fatigue?

Based on 12 studies with 900 participants, there is limited but promising evidence that Panax Ginseng may support Mental Fatigue management. Our evidence grade is C (Some Evidence).

Q: How much Panax Ginseng should I take for Mental Fatigue?

Studies have used various dosages. A commonly studied range is 200-400 mg/day standardized to 4-7% ginsenosides. Always consult your healthcare provider before starting any supplement regimen.

Q: Are there side effects of Panax Ginseng?

Reported side effects may include Insomnia, Headache, Gastrointestinal discomfort, Changes in blood pressure. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

Q: How strong is the evidence for Panax Ginseng and Mental Fatigue?

We rate the evidence as Grade C (Some Evidence). This rating is based on 12 peer-reviewed studies with 900 total participants. The overall direction of effect is positive.

Research suggests subjects taking Panax ginseng may experience less mental fatigue during extended cognitive testing. Active ginsenosides appear to support mental clarity and sustained visual processing energy.

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結論

Key Study Findings

Review

Effects of American ginseng (Panax quinquefolius) extract on human neurocognitive function: a review.

Dose: 100-2000 mg vs: None Outcome: None 効果: None None

対象集団: healthy adults and schizophrenia patients from double-blind RCTs

Animal study

Ginsenoside Rg1 alleviates PCPA-induced insomnia by inhibiting NLRP3 inflammasome activation and pyroptosis through the Nrf2/HO-1 …

Dose: None vs: Placebo 効果: None None

Review

The effects of twenty-one nutrients and phytonutrients on cognitive function: A narrative review.

Dose: None vs: None Outcome: None 効果: None None

対象集団: None

Randomized Controlled Trial 1.0 weeks Double-blind

Panax ginseng (G115) improves aspects of working memory performance and subjective ratings of calmness in …

Dose: 200 mg vs: placebo Outcome: memory 効果: None p < 0.05

対象集団: healthy volunteers

Randomized Controlled Trial n=27 Double-blind

Effects of Panax ginseng, consumed with and without glucose, on blood glucose levels and cognitive …

Dose: 200 mg G115 +/- 25g glucose vs: Placebo capsules + placebo drink Outcome: Effects of Panax ginseng, consumed with and without … 効果: None None

対象集団: Healthy young adults, overnight-fasted

Randomized Controlled Trial n=30 Double-blind

Single doses of Panax ginseng (G115) reduce blood glucose levels and improve cognitive performance during …

Dose: Panax ginseng G115 200mg or 400mg single dose vs: Placebo Outcome: Serial Sevens performance and mental fatigue 効果: 200mg improved Serial Sevens and reduced mental fatigue <0.05

対象集団: Healthy young adults

Key Statistics

研究数

900

参加者数

↑

Positive

グレード

Referenced Papers

Effects of American ginseng (Panax quinquefolius) extract on human neurocognitive function: a review. Review

Nutritional neuroscience 2026

Ginsenoside Rg1 alleviates PCPA-induced insomnia by inhibiting NLRP3 inflammasome activation and pyroptosis through the Nrf2/HO-1 pathway in mice. Other

Psychopharmacology 2025 5 件の引用

The effects of twenty-one nutrients and phytonutrients on cognitive function: A narrative review. Review

Journal of clinical … 2021 38 件の引用

Panax ginseng (G115) improves aspects of working memory performance and subjective ratings of calmness in healthy young adults. RCT

Human psychopharmacology 2010 92 件の引用

Effects of Panax ginseng, consumed with and without glucose, on blood glucose levels and cognitive performance during sustained 'mentally demanding' … RCT

Journal of psychopharmacology … 2006 154 件の引用

Single doses of Panax ginseng (G115) reduce blood glucose levels and improve cognitive performance during sustained mental activity. RCT

Journal of psychopharmacology … 2005 177 件の引用

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

一般的な使用量

general:: 200-400 mg/day standardized to 4-7% ginsenosides

上限量： Not established; up to 3,000 mg/day used short-term

研究で検討された用量

用量	期間	効果	N
100-2000 mg	--	Positive	--
None	--	Positive	--
None	--	Mixed	--
200 mg	1.0 weeks	Mixed	--
200 mg G115 +/- 25g glucose	--	Neutral	27
Panax ginseng G115 200mg or 400mg single dose	--	Positive	30

推奨摂取タイミング： Morning; cycling recommended (8 weeks on, 2 weeks off)

Safety & Side Effects

報告されている副作用

⚠ Insomnia
⚠ Headache
⚠ Gastrointestinal discomfort
⚠ Changes in blood pressure
⚠ Rare: hypoglycemia

既知の相互作用

● Anticoagulants and antiplatelet drugs
● Antidiabetic drugs (may lower blood sugar)
● MAO inhibitors (may potentiate effects)
● Stimulants (additive stimulatory effects)

耐容上限摂取量： Not established; up to 3,000 mg/day used short-term

サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。

Frequently Asked Questions

Does Panax Ginseng help with Mental Fatigue?

Based on 12 studies with 900 participants, there is limited but promising evidence that Panax Ginseng may support Mental Fatigue management. Our evidence grade is C (Some Evidence).

How much Panax Ginseng should I take for Mental Fatigue?

Studies have used various dosages. A commonly studied range is 200-400 mg/day standardized to 4-7% ginsenosides. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Panax Ginseng?

Reported side effects may include Insomnia, Headache, Gastrointestinal discomfort, Changes in blood pressure. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Panax Ginseng and Mental Fatigue?

We rate the evidence as Grade C (Some Evidence). This rating is based on 12 peer-reviewed studies with 900 total participants. The overall direction of effect is positive.

Related Evidence

に関する他の成分： Mental Fatigue

Rhodiola rosea B Creatine B

Panax Ginseng 他の症状・状態について

Age-Related Cognitive Decline C

総合評価

Evidence Strength52%

Moderate confidence

研究の内訳

RCT (3)Meta (0)Other (9)

代替成分との比較

この症状に対する他の成分との比較をご覧ください。

に関するすべての成分を見る： Mental Fatigue

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FDAに関する免責事項: これらの記述は米国食品医薬品局（FDA）による評価を受けていません。本ウェブサイトの製品および情報は、疾病の診断、治療、治癒、または予防を目的としたものではありません。表示されているエビデンスグレードは、公開された査読済み研究の分析に基づいており、医療上の助言を構成するものではありません。サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。