Quick answer: eurycomanone is a naturally occurring quassinoid in Tongkat Ali and one of the most useful compounds for standardising an extract. It gives buyers a measurable potency figure, but a higher percentage does not automatically mean better results.
To compare complete products rather than one number alone, use our Best Tongkat Ali UK buyer's guide.
What is eurycomanone, how much should Tongkat Ali contain, and is 2% automatically better than 1%? These questions matter because extract ratios such as 100:1 and 200:1 are easy to print but difficult for a customer to verify. Eurycomanone can be measured in a laboratory, usually by high-performance liquid chromatography (HPLC).
That makes it a valuable quality marker. It does not make it the only active compound in Tongkat Ali, a standalone clinical dose, or proof that one product will work better than another. This guide explains exactly what the number tells you and what it does not.
In this guide
What it is | 1% vs 2% vs 10% | How to calculate milligrams | Eurycomanone vs 200:1 | What the research shows | Buyer checklist
What is eurycomanone in Tongkat Ali?
Eurycomanone is part of a family of bitter plant compounds called quassinoids. It occurs naturally in Eurycoma longifolia, the Southeast Asian plant commonly called Tongkat Ali or Longjack. Tongkat Ali contains many other constituents, including additional quassinoids, alkaloids, proteins and polysaccharides, so eurycomanone is a marker for the extract rather than the whole story of the plant.
Manufacturers can use HPLC analysis to separate and quantify eurycomanone in an extract. A label standardised to 1% eurycomanone should therefore contain 1g of eurycomanone per 100g of extract, assuming the finished batch meets its specification. For an individual serving, the useful figure is milligrams.
The simple distinction
Percentage tells you the concentration. Milligrams tell you how much that serving supplies. You need both the extract dose and the percentage to make a fair comparison.
How do you calculate eurycomanone in milligrams?
The calculation is straightforward:
Extract per serving × eurycomanone percentage = eurycomanone per serving
Convert the percentage to a decimal first. For example, 1% becomes 0.01:
- 700mg × 0.01 = 7mg eurycomanone
- 200mg × 0.02 = 4mg eurycomanone
- 100mg × 0.10 = 10mg eurycomanone
This immediately shows why comparing percentage alone is misleading. A smaller serving at a higher percentage can supply more eurycomanone, while a larger serving at a lower percentage can supply a broader amount of the complete extract.
Is 1%, 2% or 10% eurycomanone better?
There is no human head-to-head trial proving that a 10% eurycomanone extract produces better outcomes than a 1% or 2% extract. Human Tongkat Ali trials generally test a specific standardised whole-root extract, not isolated eurycomanone and not a ladder of competing percentages.
| Example label | Calculated eurycomanone | What it tells you | What it cannot prove |
|---|---|---|---|
| 700mg at 1% | 7mg | A defined active-marker amount within a larger extract serving | That 1% is clinically superior or inferior to another percentage |
| 200mg at 2% | 4mg | A higher concentration but a smaller total extract dose | That the smaller whole-extract dose is equally effective |
| 100mg at 10% | 10mg | A highly concentrated marker level | Better effectiveness, better tolerability or equivalence to studied extracts |
A standardised water-extract specification assessed by EFSA listed eurycomanone at 0.8-1.5%. This is useful context for one established type of extract, not a universal rule that every Tongkat Ali supplement must follow. Extraction method, full chemical profile, identity and testing still matter.
Buyer takeaway: do not rank products by percentage alone. Calculate the eurycomanone milligrams, then assess the complete extract, its testing and whether its specification resembles material used in human research.
Eurycomanone vs 100:1 or 200:1 extract: what is the difference?
An extract ratio is intended to describe how much starting plant material was used to produce a quantity of extract. In theory, 200:1 means 200 parts of starting root produced one part of extract. In practice, the number does not tell you the extraction solvent, manufacturing yield, final chemical profile or how much eurycomanone survived the process.
Eurycomanone standardisation is different because it is an assay result for a named compound. A credible specification should be supported by analysis of the finished extract or batch. That is why “700mg extract standardised to 1% eurycomanone” is more informative than “200:1 Tongkat Ali” on its own.
A ratio is not automatically fake, and eurycomanone does not validate every aspect of a product. The strongest label gives you the botanical species, plant part, extract dose, standardisation and testing information together.
What does the science on eurycomanone show?
The most important point is often missed online: laboratory and animal research on eurycomanone is not the same as a human trial of isolated eurycomanone. The human evidence generally concerns whole Tongkat Ali extracts. Eurycomanone is valuable because it can help identify and standardise those extracts.
| Research | What was studied | Result | Plain-English meaning |
|---|---|---|---|
| Abubakar et al., 2018 | DNA and HPLC authentication of 11 commercial Tongkat Ali products in Malaysia | Only 37% were identified as authentic by the preferred DNA marker, while several products had no detectable eurycomanone. | Identity and chemical testing can expose weaknesses that a front-label claim cannot. It was a small, non-UK sample, so it does not estimate the whole market. |
| Low et al., 2005 | Eurycomanone pharmacokinetics in rats | Estimated oral bioavailability was 10.5% in the animal model. | Eurycomanone can be tracked after dosing, but this does not establish a human eurycomanone dose. |
| Ahmad et al., 2018 | Pure eurycomanone and a standardised water extract in mice and rats | Absorption differed substantially between species, and the authors warned against direct extrapolation to humans. | Animal absorption figures should not be turned into confident human dosage claims. |
| Leisegang et al., 2022 | Systematic review of human Tongkat Ali trials | The pooled analysis supported a possible increase in total testosterone, particularly in men with low testosterone, while calling for more research. | Human evidence supports selected whole extracts. It does not prove that the highest eurycomanone percentage wins. |
For a deeper explanation of the human trials and how to assess a complete supplement, read Buy Tongkat Ali UK: What the Science Shows and How to Choose.
The eurycomanone buyer checklist
Before buying a Tongkat Ali supplement, check whether the label or seller can answer all seven questions:
- Is the botanical named as Eurycoma longifolia?
- Does it specify the root rather than hiding the plant part?
- How many milligrams of extract are in the full daily serving?
- What eurycomanone percentage or milligram amount is guaranteed?
- Was the active marker measured using a suitable analytical method such as HPLC?
- Is there meaningful batch testing for identity, microbiology and heavy metals?
- Is the formula transparent, without a proprietary blend hiding the dose?
If a product shouts about a huge ratio but cannot answer those questions, the large number is doing more work than the evidence.
How much eurycomanone is in SuperDosed Tongkat Ali?
700mg root extract, standardised to 7mg eurycomanone per daily serving.
That is a 1% active-marker level stated as an actual milligram amount. The formula uses capsules because Tongkat Ali powder is intensely bitter, includes piperine, and does not hide the extract inside a padded proprietary blend.
See the complete label and current serving options on the SuperDosed Tongkat Ali product page.
Compare more than the headline percentage
Our full UK guide compares dose, eurycomanone, testing, formula transparency and value.
Safety matters as much as potency
A higher eurycomanone concentration should not be assumed to be safer or more effective. Long-term human evidence remains limited. A 2021 EFSA assessment of one proposed standardised Tongkat Ali root extract concluded that its safety had not been established because of concerns raised in genotoxicity testing. That finding relates to the assessed extract and reinforces the need for caution around aggressive dose claims.
Do not use Tongkat Ali if you are under 18, pregnant or breastfeeding. Speak with a GP or pharmacist before use if you take medication, have a hormone-sensitive condition, or are investigating low testosterone, fertility or sexual symptoms.
Frequently asked questions
Is eurycomanone the active ingredient in Tongkat Ali?
It is an important quassinoid and a useful standardisation marker, but Tongkat Ali is a multi-compound botanical extract. Calling eurycomanone the only active ingredient oversimplifies the plant.
How much eurycomanone should Tongkat Ali contain?
There is no universally proven human eurycomanone dose. Some established standardised water extracts sit around 0.8-1.5%, but the percentage must be considered alongside the extract dose, full specification and human evidence for that type of extract.
Is 1% eurycomanone strong?
It can represent a clearly standardised extract. The actual amount depends on serving size: 700mg at 1% provides 7mg, while 200mg at 1% provides 2mg.
Is 10% eurycomanone better than 1%?
It is more concentrated, but there is no direct human evidence showing that 10% produces better results than 1%. Higher concentration also changes the balance between eurycomanone and the rest of the extract.
Does a 200:1 extract have more eurycomanone?
Not necessarily. A ratio does not state the measured eurycomanone level. Look for a percentage or milligram figure supported by batch analysis.
How is eurycomanone tested?
Laboratories commonly use chromatography methods such as HPLC to separate eurycomanone from other extract constituents and quantify how much is present.
Has isolated eurycomanone been proven in humans?
The human outcome evidence discussed here comes from complete Tongkat Ali extracts, not isolated eurycomanone. Laboratory and animal findings should not be presented as proof of a standalone human dose.
References: Low et al. (2005), Planta Medica; Ahmad et al. (2018), Pharmaceutics; Abubakar et al. (2018), Pharmaceutical Biology; Leisegang et al. (2022), Medicina; EFSA Panel on Nutrition, Novel Foods and Food Allergens (2021), EFSA Journal. This article is for general information and is not medical advice.
