Natural Compound

Panax Ginseng

Panax ginseng (Korean/Asian ginseng)

Evidence TierBWADA NOT PROHIBITED

tuneTypical Dose

200-400 mg per day (standardized extract, 4-7% ginsenosides)

watchEffect Window

Acute (1-2 hours) for cognitive effects. 4-8 weeks for fatigue and ED.

check_circleCompliance

WADA NOT PROHIBITED

Overview

Clinical Summary

Panax ginseng is an adaptogenic root standardized to ginsenosides that influence stress and immune pathways. It is used for fatigue reduction, cognitive performance under stress, and immune support.

Trials support modest reductions in fatigue and improvements in subjective well-being, with some evidence for improved glucose control and immune markers. Cognitive and mood effects are reported in some stress contexts. Minority findings include improvements in erectile function and menopausal symptoms. Effects depend on ginsenoside profile, root age, dosing duration, and product standardization.

Ginsenosides modulate the HPA axis (adaptogenic), promote nitric oxide synthesis (vasodilation/erectile function), and exert antioxidant and mild immunostimulatory effects.

Outcomes

What This Is Expected To Influence

Primary Outcomes

  • Reduces subjective fatigue across multiple RCTs
  • Improves erectile function in mild-to-moderate ED (Korean red ginseng)

Secondary Outcomes

  • Inconsistent cognitive enhancement (acute only)
  • Mild immune stimulation (NK cell activity)
  • Mild fasting blood glucose reduction

Safety

Contraindications and Interactions

Contraindications

  • Hormone-sensitive conditions
  • Concurrent MAOI therapy
  • Pregnancy/lactation

Side effects

  • Insomnia (especially with evening dosing)
  • Headache
  • GI upset (nausea/diarrhea)
  • Nervousness
  • Rare allergic/hypersensitivity reactions
  • Rare estrogenic effects

Interactions

  • Warfarin (may reduce efficacy/decrease INR)
  • Hypoglycemic agents (potentiation, monitor glucose)
  • MAOIs including selegiline (hypertensive/overstimulation risk)
  • QT-prolonging drugs (possible transient QTc increase)
  • CYP3A4 or P-glycoprotein substrates (possible interaction signal, limited data)
  • OAT1 substrates (theoretical interaction)
  • Immunosuppressants (possible counteraction of immunosuppression)

Avoid if

  • Hormone-sensitive cancers/conditions
  • Uncontrolled hypertension
  • Active bleeding disorders
  • Pregnancy/lactation
  • High-risk QT-prolonging drug use without clinical oversight

Evidence

Study-level References

panax-ginseng-SRC-001Systematic Review
Sourceopen_in_new

Jang DJ, et al. "Red ginseng for treating erectile dysfunction: a systematic review." Br J Clin Pharmacol. 2008.

Population: Men with erectile dysfunction

Dose protocol: Korean red ginseng 1800-2700 mg/day for 4-12 weeks

Key findings: Suggestive evidence for the effectiveness of red ginseng in treating erectile dysfunction. Pooled effect was statistically significant but study quality was mixed.

Paper content

Suggestive evidence for the effectiveness of red ginseng in treating erectile dysfunction; pooled effect was statistically significant but study quality was mixed.

panax-ginseng-SRC-002RCT (double-blind crossover, n=45)
Sourceopen_in_new

Hong B, et al. "A double-blind crossover study evaluating the efficacy of Korean red ginseng in patients with erectile dysfunction." J Urol. 2002.

Population: Men with clinically diagnosed ED

Dose protocol: Korean red ginseng 900 mg TID for 8 weeks

Key findings: Significant improvement in IIEF scores (mean 28.0 vs 20.7 placebo, p<0.01). Penile rigidity improved on RigiScan monitoring.

Paper content

Significant improvement in IIEF scores (mean 28.0 vs 20.7 placebo, p<0.01). Penile rigidity improved on RigiScan monitoring.

panax-ginseng-SRC-003RCT (n=90)
Sourceopen_in_new

Kim HG, et al. "Antifatigue effects of Panax ginseng C.A. Meyer: a randomised, double-blind, placebo-controlled trial." PLoS ONE. 2013.

Population: Adults with chronic fatigue

Dose protocol: Panax ginseng 1-2 g/day for 4 weeks

Key findings: Significant reduction in fatigue severity and improvement in mental clarity vs placebo. Reactive oxygen species were reduced in the treatment group.

Paper content

Significant reduction in fatigue severity and improvement in mental clarity vs placebo. Reactive oxygen species were reduced in the treatment group.

panax-ginseng-SRC-004RCT (crossover, n=30)
Sourceopen_in_new

Reay JL, et al. "Panax ginseng (G115) improves aspects of working memory performance and subjective ratings of calmness in healthy young adults." Hum Psychopharmacol. 2010.

Population: Healthy young adults

Dose protocol: Panax ginseng 200 mg or 400 mg single dose

Key findings: 200 mg improved speed on a mental arithmetic task and subjective calmness. 400 mg did not show additional benefit. Effects were acute and modest.

Paper content

200 mg improved speed on a mental arithmetic task and subjective calmness. 400 mg did not show additional benefit. Effects were acute and modest.

panax-ginseng-SRC-005Randomized, double-blind, placebo-controlled trial.
Sourceopen_in_new

Dormal V, Jonniaux L, Buchet M, Simar L, Copine S, Deldicque L. Effect of Hydroponically Grown Red Panax Ginseng on Perceived Stress Level, Emotional Processing, and Cognitive Functions in Moderately Stressed Adults. Nutrients. 2025;17(6):955. doi:10.3390/nu17060955. PMID:40289951.

Population: Adults experiencing moderate stress levels.

Dose protocol: Red Panax ginseng extract vs placebo in 149 moderately stressed adults

Key findings: Significantly greater reductions in perceived stress and negative affect. Faster response latencies on spatial planning cognitive task.

Notes: Well-powered recent stress-cognition RCT.

Paper content

This randomized double-blind placebo-controlled trial tested red Panax ginseng in 149 moderately stressed adults. The ginseng group showed significantly greater reductions in perceived stress and negative affect compared to placebo, along with faster response latencies during a spatial planning cognitive task. A marginally larger decrease in depression scores was also observed. The results support the adaptogenic and cognitive benefits of Panax ginseng in stressed populations.

panax-ginseng-SRC-006Randomized, double-blind, placebo-controlled trial.
Sourceopen_in_new

Baek HI, Ha KC, Park YK, Kim TY, Park SJ. Efficacy and Safety of Panax ginseng Sprout Extract in Subjective Memory Impairment: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial. Nutrients. 2024;16(12):1952. doi:10.3390/nu16121952. PMID:38931306.

Population: Adults aged 55 to 75 years with subjective memory impairment.

Dose protocol: Panax ginseng sprout extract 450 mg daily for 12 weeks in 80 older adults with subjective memory impairment

Key findings: Significant improvements in verbal learning (SVLT), visual memory (RCFT), global cognition (MoCA-K), sleep quality, and acetylcholinesterase activity versus placebo.

Notes: Supports cognitive benefit in older adults with early memory complaints.

Paper content

This randomized double-blind placebo-controlled trial tested 450 mg daily of Panax ginseng sprout extract in 80 older adults (55-75 years) with subjective memory impairment over 12 weeks. The treatment group showed significant improvements in verbal learning (SVLT), visual memory (RCFT), global cognition (MoCA-K), sleep quality (PSQI-K), and acetylcholinesterase activity compared to placebo. No clinically significant adverse effects were reported. The study supports ginseng's potential for cognitive support in older adults with early memory complaints.

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