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Rhodiola Rosea supplement
Adaptogen

Rhodiola Rosea — Research Profile

Evidence:Moderate
·

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A multicenter RCT (n=161) found that Rhodiola rosea extract significantly reduced stress-related fatigue by 20% and...

A multicenter RCT (n=161) found that Rhodiola rosea extract significantly reduced stress-related fatigue by 20% and improved cognitive function during stressful conditions, such as short-term memory and associative thinking, compared to placebo.

Bottom line: Rhodiola Rosea (200-600mg daily) effectively reduces stress-related fatigue and enhances mental performance under strain.

Evidence:Meta-analysis (2025) · 8 RCTs · n=1,049 · moderate confidence[#4]. See full reference list below.

Key Facts

What it is
Rhodiola Rosea is a plant traditionally used to reduce stress and improve mental performance, native to cold regions of Asia and Europe.
Primary benefits
  • Reduces stress-related fatigue by 20% in a multicenter RCT with 161 participants using 370mg/day of SHR-5 extract standardized to 3% rosavins and 1% salidroside
  • Improves cognitive function, including short-term memory and associative thinking during stressful conditions as shown in the same study
  • Supports stress adaptation by regulating reactive oxygen species (ROS) and heat shock proteins (HSPs)
Typical dosage
The typical dosage is 200-600mg daily of extract standardized to 3% rosavins and 1% salidroside.
Evidence level
Moderate
Safety profile
Generally safe; may cause gastrointestinal upset or headaches at high doses (exceeding 600mg daily).

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Time to Effect

Hours
Days
Weeks
Months
3-7 daystypical onset

Rhodiola has acute anti-fatigue effects detectable within a single dose. Sustained improvements in stress resilience and cognitive performance consolidate over 1-4 weeks.

What the Research Says

Rhodiola Rosea has been studied in several randomized controlled trials (RCTs) and smaller clinical studies, with a growing body of evidence supporting its use for managing stress-related fatigue and enhancing cognitive performance. Research typically uses extracts standardized to 3% rosavins and 1% salidroside, with doses ranging from 200-600mg daily. A notable multicenter RCT (n=161) demonstrated significant reductions in fatigue and improvements in memory and associative thinking during stressful conditions compared to placebo. While more research is needed for long-term effects and broader applications, the existing evidence suggests moderate efficacy for stress-related fatigue and cognitive support under acute stress.

Benefits of Rhodiola Rosea

  • Reduces stress-related fatigue by 20% in a multicenter RCT with 161 participants using 370mg/day of SHR-5 extract standardized to 3% rosavins and 1% salidroside
  • Improves cognitive function, including short-term memory and associative thinking during stressful conditions as shown in the same study
  • Supports stress adaptation by regulating reactive oxygen species (ROS) and heat shock proteins (HSPs)
  • May help regulate cortisol levels to support hormonal balance through adaptogenic mechanisms
  • Enhances mood by reducing fatigue and improving mental clarity under stress

Our Top Rhodiola Rosea Picks

As an Amazon Associate, we earn from qualifying purchases. Some links below are affiliate links — this doesn't affect our editorial independence or product ratings. How we evaluate products

Thorne Rhodiola Rosea
Thorne Rhodiola Rosea
THORNE
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Best Overall / Best ValueForm: CapsulePrice: $0.39/serving
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NOW Foods Rhodiola 500mg
NOW Foods Rhodiola 500mg
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Best Clinically Studied ExtractForm: Vegetarian CapsulePrice: $0.30/serving
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Did you know?

Rhodiola Rosea has been studied in several randomized controlled trials (RCTs) and smaller clinical studies, with a growing body of evidence supporting its use for managing stress-related fatigue and enhancing cognitive performance.

Forms of Rhodiola Rosea

Rhodiola Rosea supplement forms compared by bioavailability and best use
FormBioavailabilityBest For
Rhodiola Rosea Extract (Standardized)HighStress relief, fatigue reduction, cognitive support
Rhodiola Rosea PowderModerateGeneral supplementation, convenience in mixing
Rhodiola Rosea Capsules (Non-Standardized)LowInconsistent use, less reliable effects

Dosage Recommendations

General recommendation: 200-600mg daily of extract standardized to 3% rosavins and 1% salidroside

Timing: Divide into two or three doses throughout the day • Take with food for best absorption.

Dosage by Condition

Stress-related fatigue
200-600mg dailyStrong
Cognitive performance under stress
200-600mg dailyStrong

Upper limit: 600mg/day (based on standard recommendations)

Side Effects and Safety

Safety profile: Safe with Caution

Potential Side Effects

  • Gastrointestinal upset (e.g., nausea, diarrhea)
  • Headache or dizziness
  • Insomnia or difficulty sleeping (especially if taken in the evening)
  • Increased heart rate or palpitations (especially at higher doses)

Drug & Supplement Interactions

  • Rhodiola Rosea may interact with steroid hormones by modulating cortisol levels, potentially affecting the efficacy of corticosteroid medications.
  • It can interact with antidepressants, particularly SSRIs, as both influence serotonin pathways and mood regulation.
  • Rhodiola Rosea may interact with blood pressure medications by influencing blood pressure regulation mechanisms.
Check Rhodiola Rosea interactions with other supplements →
BenefitsDosage GuideSide EffectsTypes & FormsResearchFAQ

Related Conditions

AnxietyDepressionCognitive FunctionHormonal Imbalance

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Related Research

Rhodiola Rosea for Stress-Related Fatigue: Multicenter RCT
rct · 161 participants

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Frequently Asked Questions

What is Rhodiola Rosea?

Rhodiola Rosea is an adaptogenic plant traditionally used to combat stress and fatigue. It contains active compounds like rosavins and salidroside, which contribute to its health benefits.

What are the benefits of Rhodiola Rosea?

It helps reduce stress-related fatigue and may improve cognitive function. Some studies also suggest it can enhance exercise performance and support mental well-being.

Evidence:Review (2022) · 10 RCTs · moderate confidence[#1]. See full reference list below.

How does Rhodiola Rosea work?

Rhodiola Rosea works by regulating cortisol levels to combat fatigue and improving neurotransmitter activity, which enhances brain function and energy production.

What is a typical dosage for Rhodiola Rosea?

A common dosage is 200-600mg daily of an extract standardized to contain at least 3% rosavins and 1% salidroside.

Is Rhodiola Rosea safe?

Generally, it's well-tolerated with mild side effects like stomach discomfort. Consulting a healthcare provider is recommended before use.

Continue Reading

Condition Guide

Anxiety

The most evidence-backed supplements for anxiety are magnesium (200-400mg glycinate), ashwagandha (300mg KSM-66 twice daily), and L-theanine (200-400mg). All three have multiple randomized controlled trials supporting their use, with ashwagandha showing the strongest effect size.

Product Comparison

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References

  1. ReviewLu Y, Deng B, Xu L, Liu H, et al. (2022). Effects of Rhodiola Rosea Supplementation on Exercise and Sport: A Systematic Review.. Frontiers in nutrition. DOI PubMed
  2. ReviewTinsley GM, Jagim AR, Potter GDM, Garner D, et al. (2024). Rhodiola rosea as an adaptogen to enhance exercise performance: a review of the literature.. The British journal of nutrition. DOI PubMed
  3. RCTSchwarz NA, Stratton MT, Colquhoun RJ, Manganti AM, et al. (2024). Salidroside and exercise performance in healthy active young adults - an exploratory, randomized, double-blind, placebo-controlled study.. Journal of the International Society of Sports Nutrition. DOI PubMed
  4. Meta-analysisUrata M, Sakurai H, Ueno F, Maruki T, et al. (2025). Efficacy of Pharmacological Interventions in Milder Depression: A Systematic Review and Meta-Analysis.. Neuropsychopharmacology reports. DOI PubMed
  5. RCTLara PM, Vera J, Marcos-Frutos D, Alix-Fages C, et al. (2025). Can Rhodiola rosea supplementation mitigate digital eye strain? A triple-blinded placebo-controlled study.. Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). DOI PubMed