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📰Read the full Rhodiola evidence review on GMJ News →Complete clinical article, references and updates on news.gmj.ge. This page is the structured safety summary.⚠ Distinguishing adaptogens: Rhodiola = energizing; Ashwagandha = calming [2]
⚠ Patient on SSRIs — theoretical serotonergic risk; less dangerous than St. John's Wort but use caution [2]
⚠ Take in MORNING — mildly stimulating, may interfere with sleep if taken at night [3]
ℹ️ Not obtained from food. Not applicable — this is not obtained from food in meaningful amounts; supplementation is the practical route.
🔬 Lab interpreter
Recommended test
No routine monitoring needed
No routine monitoring needed
Reference range / target
N/A
N/A
Benefits assessed clinically [3].
Full lab monitoring ↓⚕ For professionals — confirm ranges against your local laboratory.
Clinical verdict
Rhodiola is the 'energizing adaptogen' — best for stress-related fatigue and burnout, not anxiety (use Ashwagandha for that). One RCT showed comparable efficacy to low-dose sertraline for mild depression. Standardize to 3% rosavins + 1% salidroside. Take in the morning. EMA-recognized for stress-related fatigue [2] [3] [4].
1 How much do I need?
👤 Adults: Specific dosage data under clinical review
👴 Elderly: Specific dosage data under clinical review
🤰 Pregnancy: See guidance
No safety data. Avoid in pregnancy and lactation [1].
👦 Pediatric: See guidance
No pediatric data. Not recommended for children [1].
🏃 Athletes: Standard dose
⚖️ Obesity: Standard dose
Fat-soluble compounds may require dose adjustment in obesity.
🩺 Renal: Consult specialist
Dose adjustment may be needed in renal impairment.
🌱 Vegan: Standard dose
How to take
🍽 Timing: Morning (mildly stimulating). Avoid evening [3].
💊 With food: Can be taken with or without food [2].
🚫 Avoid: Evening dosing. Concurrent SSRIs without caution [2].
2 Which form?
| Form | Bioavailability | Vegan | Cost |
|---|---|---|---|
| ['SHR-5 extract', 'preferred', 'The most clinically studied extract. Standardized to 3% rosavins + 1% salidroside. Used in Swedish and Russian trials [2].'] | Standard | Check label | |
| ['Generic Rhodiola rosea extract', 'common', 'Look for 3:1 rosavin:salidroside ratio. Quality varies widely [2].'] | Standard | Check label | |
| ['Rhodiola crenulata', '', 'Different species with higher salidroside, lower rosavins. Less studied than R. rosea [1].'] | Standard | Check label |
3 Common questions
Is Rhodiola a stimulant? ▼
It is mildly activating but not a classical stimulant. It enhances mental clarity and energy primarily through HPA axis modulation and monoamine effects, not through sympathomimetic mechanisms [2]. Take in the morning.
How is Rhodiola different from other adaptogens? ▼
Rhodiola is more stimulating/energizing than Ashwagandha (which is more calming/sedating). Choose Rhodiola for fatigue and mental performance; Ashwagandha for anxiety and sleep [2].
Can Rhodiola treat depression? ▼
One RCT showed comparable efficacy to low-dose sertraline for mild depression [4]. It is NOT appropriate for moderate-severe depression. It may be a reasonable first option for very mild depressive symptoms.
How do I choose a quality product? ▼
Look for Rhodiola rosea (not crenulata), standardized to 3% rosavins + 1% salidroside, with the SHR-5 extract designation if available [2].
4 Clinical evidence
Strong
Adaptogenic mechanism: Rhodiola modulates cortisol response and stress-activated protein kinases in multiple pharmacological studies [2]. WHO monograph recognizes adaptogenic properties [3]. HIGH
Moderate
Fatigue reduction: systematic review of 11 RCTs showed improved fatigue symptoms with Rhodiola, particularly in stress-related burnout and mild-moderate fatigue [3]. Mild-moderate depression: one RCT (n=89) showed Rhodiola 340 mg/day comparable to sertraline 50 mg/day for mild depression (with fewer side effects) [4]. Cognitive function under stress: improved mental performance during prolonged work and sleep deprivation in several trials [2]. MODERATE
Insufficient
5 Safety, toxicity & adverse events
Relative
⚠ Bipolar disorder — stimulant/antidepressant properties may trigger mania
⚠ Concurrent antidepressants (SSRIs, MAOIs) — theoretical serotonergic interaction
⚠ Concurrent antihypertensives — rhodiola may lower blood pressure additively
⚠ Insomnia — take morning only; stimulant properties
🚩 Red flags
● Patient taking Rhodiola + SSRI — monitor for serotonergic symptoms [2]
● Patient taking Rhodiola for severe depression — insufficient evidence; refer to standard treatment [4]
6 Interactions
Drug interactions
SSRIs/SNRIs Moderate
Mechanism: Rhodiola modulates serotonin and dopamine systems. Theoretical additive serotonergic activity. [2]
Effect: Theoretical serotonin syndrome risk, though less than St. John's Wort. [2]
Action: Use with caution. Monitor for serotonergic symptoms [2].
Supplement synergies
L-Theanine · 200 mg L-theanine
Rhodiola (energizing) + L-theanine (calming without sedation) provides balanced focus and stress resistance [2].
Rhodiola (energizing) + L-theanine (calming without sedation) provides balanced focus and stress resistance [2].
Ashwagandha · 300–600 mg ashwagandha
Different adaptogenic profiles: Rhodiola for daytime energy, Ashwagandha for evening calm. Complementary use [2].
Different adaptogenic profiles: Rhodiola for daytime energy, Ashwagandha for evening calm. Complementary use [2].
7 Regulatory
United States (FDA): Dietary supplement. No health claims [1].
European Union: EMA (European Medicines Agency) classifies Rhodiola as a 'traditional herbal medicinal product' for stress-related fatigue [3].
Russia/Scandinavia: Long traditional use. Pharmacopoeia-listed in Russia and Scandinavia [1].
South Korea (MFDS): Available as dietary supplement ingredient.
8 US supplement products
194
on-market products containing Rhodiola (NIH DSLD)
Brands carrying Rhodiola (124)
Click a brand to see its Rhodiola products.
9 Frequently paired with
10 Cite this page
Vancouver: Pkhakadze G. Rhodiola — safety profile [Internet]. Tbilisi: PHIG; 2026 [cited 2026 Aug 15]. Available from: https://supplement.ge/ingredients/rhodiola/
APA 7th: Pkhakadze, G. (2026). Rhodiola — Safety profile. Public Health Institute of Georgia. https://supplement.ge/ingredients/rhodiola/
📋 Editorial information
Author: Prof. G. Pkhakadze, MD, MPH, PhD
Institution: Public Health Institute of Georgia (PHIG)
Affiliation: David Tvildiani Medical University (DTMU)
First published: January 2026
Last reviewed: 2026-05-29
Next review: February 2027
References: 4 cited sources
COI: SupplementIndex receives no funding from supplement manufacturers. All content independently authored by PHIG.
Process: Systematic literature review
📄 License & reuse
Published under Creative Commons Attribution 4.0 International (CC BY 4.0). You may share and adapt for any purpose with attribution.
Pkhakadze G. "Rhodiola — Safety Profile." SupplementIndex, PHIG, 2026. https://supplement.ge/ingredients/rhodiola/ CC BY 4.0.
GP
Prof. G. Pkhakadze, MD, MPH, PhD
Professor of Public Health · Head of Department, DTMU
Editor-in-Chief, Georgian Medical Journal (ISSN 3088-4322)
Chair, Public Health Institute of Georgia · UEMS Public Health Section
Educational and public health purposes. CC BY 4.0. Consult your healthcare provider before starting any supplement. Corrections: info@accreditation.ge. Publisher: PHIG