"Adaptogen" is not a marketing word. The term was defined by N. Lazarev (1947) to describe substances that non-specifically raise an organism's capacity to resist stress. Rhodiola rosea is one of the three adaptogens officially recognised by the EMA (European Medicines Agency, 2012 monograph).
1. Botanical ID card
2. Active compounds — who does what?
Salidroside
Phenolic glycoside. Main target for CNS effects. Neuroprotective and anti-fatigue effects documented in more than 80 studies (Ishaque 2012).
Rosavins (rosavin, rosin, rosarin)
Specific to R. rosea (absent from other Rhodiola species). They modulate the monoaminergic system and the HPA axis.
Tyrosol & p-tyrosol
Precursors of salidroside. Antioxidant and anti-inflammatory activity (Calcabrini 2010).
Flavonoids (rhodionin, rhodiosin)
Reinforce the adaptogenic effect by modulating cellular signalling under oxidative stress.
3. Mechanism of action — what changes in the body
Rhodiola is not a stimulant. It acts as a regulator of the HPA axis (Hypothalamic-Pituitary-Adrenal) and the sympathetic nervous system:
- ↓ Morning cortisol by 23% on average over 28 days at 400 mg/day (Olsson 2009).
- Inhibition of COMT and MAO → ↑ availability of norepinephrine, dopamine, serotonin in the brain.
- ↑ Mitochondrial ATP and ↓ lipid peroxidation (action on cellular fatigue).
- HSP-70 modulation (heat-shock protein) — cellular protection under stress.
- Brain tissue protection against oxidative stress (Panossian 2010, PI3K/Akt study).
4. What major clinical trials show
5. Effective dosage — the clinical window
| Goal | Validated dose | Time to onset |
|---|---|---|
| Work-related stress / burnout | 200–400 mg/day | 2–4 weeks |
| Chronic mental fatigue | 200–600 mg/day | 4–8 weeks |
| Acute cognitive performance | Single 200 mg dose, 1 h before | 30–60 min |
| Observed effective plateau | ≈ 680 mg/day | — |
All cited studies use an extract standardised to 3% rosavins and 1% salidroside (SHR-5 type, developed in Sweden). Non-standardised extracts may be 5 to 10 times less concentrated in active principles.
6. Why BIORYA chose it
In CALM AUTHORITY, Rhodiola brings the long-term resilience dimension — where L-theanine soothes immediately, Rhodiola rebuilds the capacity to absorb. It is the active for demanding days, cycles of pressure, periods where you have to hold without burning out. Paired with the 60-second ritual, it fits into a steady, measurable baseline day after day.
7. Cited studies
- Kasper S., Dienel A. (2017). Multicenter open-label exploratory clinical trial with Rhodiola rosea extract in patients suffering from burnout symptoms. Neuropsychiatric Disease and Treatment.
- Edwards D. et al. (2012). Therapeutic Effects and Safety of Rhodiola rosea Extract WS®1375 in Subjects with Life-stress Symptoms — a RCT. Phytotherapy Research.
- Olsson E. M. G. et al. (2009). A randomised, double-blind, placebo-controlled, parallel-group study of the standardised extract SHR-5 of the roots of Rhodiola rosea in the treatment of subjects with stress-related fatigue. Planta Medica.
- Spasov A. A. et al. (2000). A double-blind, placebo-controlled pilot study of the stimulating and adaptogenic effect of Rhodiola rosea SHR-5 extract on the fatigue of students. Phytomedicine.
- Panossian A., Wikman G. (2010). Effects of adaptogens on the central nervous system and the molecular mechanisms associated with their stress-protective activity. Pharmaceuticals.
- Ishaque S. et al. (2012). Rhodiola rosea for physical and mental fatigue: a systematic review. BMC Complementary and Alternative Medicine.
- EMA (2012). Community herbal monograph on Rhodiola rosea L., rhizoma et radix. European Medicines Agency.
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