CuratedFit
CURATEDFIT SUMMARY
Passes because this is a genuinely single-ingredient formula, Rhodiola Rosea root extract, standardized to two separate marker compounds, rosavins and salidrosides, rather than just one. Both standardization figures are disclosed with their specific milligram amounts, and the manufacturer states the extract uses authentic Rhodiola rosea species specifically, a relevant point given species substitution is a known issue in the wider Rhodiola supplement category. No synthetic actives or proprietary blend are present.
WHAT IT IS
A vegetarian capsule providing 250 mg of Rhodiola Rosea root extract, standardized to 3% rosavins (7.5 mg) and no less than 1% salidrosides (2.5 mg). Rhodiola is classified as an adaptogen, a category of herbs traditionally understood to help the body handle physical and mental stressors, and this dual-marker standardization is specifically noted by the manufacturer as matching the concentrations used in the clinical trials referenced on the product page.
WHO IT IS FOR
Someone looking for a single-ingredient Rhodiola supplement standardized against both of its primary marker compounds, for support with fatigue and mental sharpness under demanding conditions.
INGREDIENT BREAKDOWN
Rhodiola Rosea Extract (root), standardized to 3% rosavins (7.5 mg) and NLT 1% salidrosides (2.5 mg)
250 mg
Rosavins and salidrosides are the two compound classes most commonly used to standardize Rhodiola extracts, and disclosing both, rather than just one, gives a more complete picture of the extract's composition. The manufacturer specifically notes the use of authentic Rhodiola rosea species, worth flagging since species substitution, particularly with the visually similar but different Rhodiola crenulata, has been a documented quality issue in the wider Rhodiola supplement category. Maltodextrin is present as a bulking agent, a starch-derived carbohydrate rather than a synthetic filler.
Other ingredients
Vegetable Cellulose (capsule), Maltodextrin, Microcrystalline Cellulose, Vegetable Stearate, Silica
CERIFICATIONS
Informed Sport
Not Confirmed
Banned substance tested
Not Confirmed
GMP Certified
Not Confirmed
Heavy metals tested
Not Confirmed
BRCGS
Not Confirmed
FSSC 22000
Not Confirmed
CURATEDFIT STANDARD CHECK
Pass
As Natural As Possible
Single botanical extract, no synthetic active ingredients
Info
Contains What It Claims
Dual-marker standardization (rosavins and salidrosides) is disclosed with specific amounts. CuratedFit has not seen independent lab verification of these figures
Pass
Every Ingredient Earns Its Place
Standard functional excipients only, no synthetic preservatives, sweeteners, or flavourings
Pass
No Insect-Derived Ingredients
No animal or insect derived ingredients present
Pass
No Proprietary Blends
Single active ingredient, fully disclosed with specific standardization and dose
Info
Allergen Declaration
Manufacturer states the product is gluten free. No broader allergen cross contact statement was located on this specific page
Pass
Sugar Content Declared
No sugar ingredient present
Pass
Artificial Sweeteners and Flavorings
None present
Info
Heavy Metals and Contaminants
Not addressed on this specific product page
Pass
Banned Substance Risk Declared
Single adaptogenic herb, not a banned substance
Info
Country of Manufacture Noted
Not confirmed on the page reviewed
TRANSPARENCY NOTE
This is a well disclosed single-ingredient product. Standardizing to both rosavins and salidrosides, rather than just rosavins alone, gives a more complete picture of the extract's active compound profile, and the manufacturer's specific claim of using authentic Rhodiola rosea species is worth taking seriously given documented species substitution issues elsewhere in the Rhodiola category, where Rhodiola crenulata is sometimes used as a cheaper substitute without always being disclosed clearly.
The product page cites twelve separate research references covering physical and cognitive performance, stress response, and the specific standardized extract concentration used in trials, a level of referencing consistent with other Life Extension products already reviewed in this catalogue.
Worth noting for comparison: a Rhodiola Rosea option from Planetary Herbals via Chinese Herbs Direct was previously identified as a clean sourcing candidate for this herb. This Life Extension product offers a genuine point of comparison if both are being considered for the same category slot, both are single-ingredient, standardized extracts.
FREQUENTLY ASKED QUESTIONS
Why does this standardize to two compounds instead of one?
Rosavins and salidrosides are the two primary marker compound classes used to characterize Rhodiola extracts. Disclosing both gives a fuller picture of the extract's composition than standardizing to just one.
What is Rhodiola crenulata and why does it matter?
It's a different Rhodiola species sometimes substituted for Rhodiola rosea in lower-quality supplements, since the two can be visually similar as raw material. The manufacturer's specific claim of using authentic Rhodiola rosea is a relevant transparency point given this known category issue.
Does this contain a proprietary blend?
No. It's a single ingredient, fully disclosed with its exact standardization and dose.
Why does the label say "take early in the day if it interferes with your sleep"?
Rhodiola is associated with alertness and energy effects for some users, so the manufacturer recommends earlier dosing if evening use affects sleep.
Is this suitable for vegetarians?
Yes, per the manufacturer's stated claim, including the capsule shell itself.
Has this been tested for heavy metals or contaminants?
Not addressed on this specific product page.
Where is this manufactured?
Not confirmed on the page reviewed.
Last reviewed:
7/18/26
Life Extension Europe Rhodiola Extract product page (lifeextensioneurope.co.uk), including manufacturer stated supplement facts panel and cited research references.
Sources:
Last updated:
7/18/26
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