Adaptogen
Rhodiola Rosea
Rhodiola rosea (golden root)
An adaptogen from cold northern climates, traditionally used for fatigue and burnout. Best known for supporting mental stamina when you're running on empty.
Our pick, and why
Choosing a rhodiola rosea on iHerb
NOW Foods is the clear pick: it's the only one here that explicitly states both markers — min. 3% rosavins and min. 1% salidroside — in the exact SHR-5 trial ratio, at 500 mg of verified R. rosea. Gaia Herbs states rosavins (6 mg from 120 mg = ~5%, above the 3% threshold) but doesn't disclose salidroside at all, and 120 mg is at the low end of the studied range — it partially passes but leaves half the criterion unconfirmed. Thorne lists Rhodiola rosea root extract at 100 mg with no standardization stated — there's no way to confirm it matches the trialed extract ratio, and 100 mg is below the studied dose range. Thorne is a rigorous manufacturer, but this is a label transparency issue the criterion is specifically designed to catch.
How we judge these
Standardized to 3% rosavins / 1% salidroside (SHR-5 ratio), R. rosea species, 200–500 mg dose.
| Product | Product | Standardization | Rosavins / salidroside | Dose / serving | Species | Meets it | Link |
|---|---|---|---|---|---|---|---|
| Our pick NOW Foods Rhodiola 500 mg | Min. 3% rosavins / 1% salidroside | 15 mg / 5 mg per capsule | 500 mg | R. rosea ✓ | ✓ | iHerb → | |
| Gaia Herbs Rhodiola Rosea | Rosavins only (~5%) | 6 mg rosavins / not stated | 120 mg | R. rosea ✓ | ✓ | iHerb → | |
| Thorne Rhodiola | Not stated | Not stated | 100 mg | R. rosea ✓ | — | iHerb → |
- NOW Foods Rhodiola 500 mgOur pick
- Standardization
- Min. 3% rosavins / 1% salidroside
- Rosavins / salidroside
- 15 mg / 5 mg per capsule
- Dose / serving
- 500 mg
- Species
- R. rosea ✓
- Meets our criterion
- ✓
- Gaia Herbs Rhodiola Rosea
- Standardization
- Rosavins only (~5%)
- Rosavins / salidroside
- 6 mg rosavins / not stated
- Dose / serving
- 120 mg
- Species
- R. rosea ✓
- Meets our criterion
- ✓
- Thorne Rhodiola
- Standardization
- Not stated
- Rosavins / salidroside
- Not stated
- Dose / serving
- 100 mg
- Species
- R. rosea ✓
- Meets our criterion
- —
Specs verified against live listings at time of writing and can change — confirm on the product page. Links are affiliate links; details.
Where ashwagandha tends to calm, rhodiola tends to lift. It’s the adaptogen of choice for the kind of stress that shows up as exhaustion, brain fog and burnout rather than racing thoughts. Studies — many from Scandinavia and Russia where the plant grows wild — focus on stress-related fatigue and mental performance under load.
Because it can be mildly stimulating, rhodiola is a morning supplement, and pairs naturally with the energy and B-vitamin themes elsewhere on this site.
What to look for
- Extract standardized to ~3% rosavins and ~1% salidroside
- Morning dosing to avoid interfering with sleep
- A few weeks of consistent use to assess the effect