By ValueReviewHub Editorial · Sources checked September 28, 2026 · How we review
Rhodiola rosea, also called golden root or arctic root, is an herb traditionally used in cold, mountainous regions of Europe and Asia to fight fatigue. Today it appears in energy, stress and weight management formulas, including the Mitolyn blend. This guide summarizes what the research actually shows, the known side effects and interactions, and what to check on a label.
Bottom line: The National Center for Complementary and Integrative Health (NCCIH) states that “there isn’t enough reliable evidence to determine whether rhodiola or its components are useful for any health-related purpose”. Most human studies are of low to moderate quality. Rhodiola is possibly safe for up to 12 weeks.
What is rhodiola?
Rhodiola is a flowering plant whose root is used in supplements. It is often called an “adaptogen”, a term for herbs said to help the body cope with stress. “Adaptogen” is a marketing and traditional-medicine category, not a scientifically defined drug class. Rhodiola products are commonly standardized to compounds called rosavins and salidroside.
What the research says
| Claimed use | Evidence summary (NCCIH) |
|---|---|
| Fatigue and mental performance | Studied, but evidence is insufficient to draw conclusions |
| Stress and burnout | Studied, but most research is low to moderate quality |
| Exercise performance | Not enough reliable evidence |
| Depression | Not enough reliable evidence. Do not use it in place of treatment. |
| Weight loss | No reliable human evidence that rhodiola causes weight loss |
Laboratory studies of salidroside have examined cellular ageing and mitochondrial processes. They are useful for generating hypotheses, but they are not evidence of benefit in people. We explain why in Mitochondria and metabolism.
Side effects and safety
- Duration: NCCIH describes rhodiola as possibly safe for up to 12 weeks. Longer-term safety is not well studied.
- Reported side effects: dizziness, headache, insomnia, and either dry mouth or excessive saliva.
- Interactions: interactions with losartan, a blood pressure medicine, have been reported. Check with a pharmacist if you take any regular medication.
- Pregnancy and breastfeeding: safety information is limited, so avoid it unless a clinician advises otherwise.
What to check on a rhodiola label
- Species: look for Rhodiola rosea. Other species are sometimes substituted.
- Standardization: stated rosavin and salidroside content suggests better quality control.
- Dose disclosure: in blends, rhodiola is often hidden in a proprietary blend, so you cannot tell how much you are getting.
- Stimulant stacking: rhodiola may affect sleep. Be careful combining it with caffeine-heavy products.
Who should avoid rhodiola
People who are pregnant or breastfeeding, people taking blood pressure medicines such as losartan, and anyone being treated for depression or another mental health condition should talk to their clinician first.
FAQ
Does rhodiola help you lose weight?
There is no reliable human evidence that it does. Its presence in a weight loss formula is based on theory and lab research.
When should rhodiola be taken?
Because insomnia is a reported side effect, many labels suggest morning use. Follow the product label and your clinician’s advice.
Related reading
- Mitolyn review
- Mitochondria and metabolism explained
- Do weight loss supplements work?
- Green tea extract for weight loss
Sources
Medical note: This article is general education, not medical advice. Talk to your doctor or pharmacist before starting a supplement, especially if you take medication, are pregnant or breastfeeding, or have a health condition. Read our medical disclaimer.