What is rhodiola rosea?
Rhodiola rosea is a herb that grows in cold, mountainous regions and has a long history of traditional use for endurance and resilience. It is classed as an adaptogen, meaning it is thought to help the body cope with physical and mental stress. It is taken today mainly to reduce fatigue and support energy under pressure.
How it works
Rhodiola contains active compounds called rosavins and salidroside, which are believed to influence stress hormones like cortisol and support neurotransmitter balance. The result, in theory, is better resistance to fatigue and stress, allowing you to perform closer to your best when tired or under pressure.
What the research says
- Reasonable evidence for reducing mental and physical fatigue, especially when run down
- May modestly improve endurance and perceived exertion during exercise
- Some evidence for supporting mood and stress resilience
- Effects are generally subtle rather than dramatic
- Better supported than many other adaptogens, though more research would help
Effective dose
200–600mg per day of an extract standardised to around 3% rosavins and 1% salidroside is the common range. It is usually taken in the morning, as it can be mildly stimulating for some people. Effects on fatigue can be felt fairly quickly, while stress-related benefits may build over a few weeks.
What to check on the label
Look for a standardised extract listing the rosavin and salidroside content, ideally the classic 3:1 ratio. Unstandardised herb powder is far less reliable. As with many herbal supplements, quality and potency vary a lot between brands, so the standardisation is what matters.
Safety
Rhodiola is well tolerated for most people. Because it can be mildly stimulating, taking it late in the day may affect sleep for some. Anyone on medication, particularly for mood or blood pressure, or who is pregnant, should check with a doctor before using it.