Nootropics Depot vs Double Wood Tongkat Ali 2026: The Dose
One of these tells you the dose and one does not. Nootropics Depot is 200 mg standardised to 2% eurycomanone, 4 mg per capsule, at $0.32 a day. Double Wood is 1,000 mg of a 200:1 extract with no active declared, at $0.42 a day, 31% more. Buy the declared dose; the bigger number on the Double Wood label is a ratio, not a quantity of anything the trials measured.
Informational comparison of label data and cost, not medical advice. Tongkat ali affects hormones; do not take it with hormone therapy or if you are pregnant, and stop before surgery.
The numbers, side by side
| Per serving | Nootropics Depot 2% | Double Wood 200:1 |
|---|---|---|
| Extract | 200 mg root extract (1 capsule) | 1000 mg root extract (2 capsules) |
| Declared active | 2% eurycomanone = 4 mg | none declared |
| Basis of the claim | standardisation, HPTLC-assayed | 200:1 concentration ratio |
| Servings per bottle | 120 | 60 |
| Testing on label | Third-Party Tested (HPTLC) | Third-Party Tested |
| Price | $37.98 | $24.95 |
| Cost per day | $0.32 | $0.42 |
| Cost per year | $115.52 | $151.78 |
| Buy | Check price → | Check price → |
Prices are the current Amazon price for the exact bottle (verified 2026-09-17) divided by servings; they move week to week.
The real difference: a declared active against a ratio
The human trials of tongkat ali used standardised water extracts at 200 to 400 mg a day: 200 mg a day for four weeks lowered cortisol and improved mood scores in moderately stressed adults (Talbott 2013, PMID 23705671), and 300 mg a day of a freeze-dried water extract for 12 weeks improved quality-of-life and sexual well-being scores in a randomised trial (Ismail 2012, PMID 23243445). Standardised means the maker measured a marker compound, eurycomanone, and guaranteed a minimum. Nootropics Depot’s label does that: 2%, so 4 mg in a 200 mg capsule, with lot certificates showing the assay.
A 200:1 ratio guarantees nothing about eurycomanone. It describes the process, and two 200:1 powders can differ several-fold in active depending on the root and the extraction. Double Wood’s 1,000 mg is five times the extract weight for 31% more money, and it may contain more eurycomanone than the Nootropics Depot capsule or less; the label does not let you know. Its genuine merit is price per milligram of extract, and the label states third-party testing; for a root extract, heavy metals are the contaminant that matters, so ask the brand for that certificate. A ratio is not a dose.
The other two trials, and what all four share
Two further human studies fill out the dose range, and both are weaker designs. In 76 men with late-onset hypogonadism, 200 mg a day of a standardised water-soluble extract for one month improved Ageing Males’ Symptoms scores and serum testosterone, but the study had no placebo group (Tambi 2012, PMID 21671978). In 25 physically active adults aged 57 to 72, 400 mg a day for five weeks raised total and free testosterone and handgrip strength, again with no control arm (Henkel 2014, PMID 23754792). What all four studies share is the material: a water extract of the root, standardised by the maker, given at 200 to 400 mg a day for four to twelve weeks to a few dozen people. None reported a eurycomanone milligram figure, which is why a declared percentage is the nearest thing a label can offer to the trial material, and none used a 200:1 ratio product, so a ratio label cannot claim the trials at all. Read the sample sizes before reading the effect sizes; the largest of the four had 109 participants.
Cost per year, and per milligram of declared active
At one capsule a day and current Amazon prices, Nootropics Depot 2% runs $116 a year and Double Wood $152, a gap of $36. Per milligram of declared eurycomanone the Nootropics Depot capsule works out at $0.079 per milligram; Double Wood’s figure cannot be computed because the label declares no active, which is the whole argument of this page in one missing number. If you move up to the 10% Nootropics Depot extract (10 mg eurycomanone per 100 mg capsule) the per-milligram cost falls further even though the per-capsule price rises; the tongkat ali cost-per-dose page runs that arithmetic across every product we track.
How to read a tongkat ali label in four checks
First, the extraction solvent: the trial material was a water extract, and a label that names no solvent tells you nothing about what was pulled from the root. Second, standardisation: a percentage of eurycomanone (or a milligram figure) is a guarantee the maker can be held to; a ratio is not. Third, the milligram figure’s meaning: 200 mg of a standardised extract and 1,000 mg of a 200:1 concentrate are different objects, and neither is the raw root. Fourth, the lot certificate: for a root extract, heavy metals are the contaminant that matters, so a brand that publishes a lot-specific certificate with a metals panel has answered the question a “third-party tested” badge only gestures at. Nootropics Depot passes the second and fourth checks on its label and lot pages; Double Wood passes neither on the label alone, which does not make it a bad product, only an unpriceable one.
Who each one is for
Choose Nootropics Depot if you want to know the eurycomanone you are taking and match it to the trial range; it is also the cheaper product per day. The 10% version (100 mg, 10 mg eurycomanone) is the step up if 4 mg is not enough.
Choose Double Wood if you want the most extract per dollar and accept an undeclared active; take it as an experiment, not a dose.
Skip both if you are drug-tested: neither is in a banned-substance registry. Momentous Tongkat Ali is Informed Sport listed; see the full ranking.
Our picks
2% eurycomanone, 4 mg per 200 mg capsule, HPTLC-assayed lot certificates. $0.32 a day.
1,000 mg of 200:1 extract, no active declared. $0.42 a day.
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The evidence · Tongkat Ali
What the published reviews of Tongkat Ali concluded
- Efficacy of Tongkat Ali (Eurycoma longifolia) on erectile function improvement: systematic review and meta-analysis of randomized controlled trials. · Complementary therapies in medicine, 2015
“Based on current evidence, the herbal extract of Tongkat Ali may have clinical effect on erectile function. However, more efficacy trials are warranted to further support current evidence.”
- A 6-month, double-blind, placebo-controlled, randomized trial to evaluate the effect of Eurycoma longifolia (Tongkat Ali) and concurrent training on erectile function and testosterone levels in androgen deficiency of aging males (ADAM). · Maturitas, 2021
“The combination of Eurycoma longifolia and concurrent training improved erectile function and increased total testosterone levels in men with ADAM.”
Method: PubMed searched in humans for systematic reviews, meta-analyses and randomised trials with Tongkat Ali in the title; these 2 of the 2 that qualified are shown with the authors’ own conclusion quoted rather than summarised. What it cannot tell you: whether Tongkat Ali will work for you — each of these reports an average across trials published 2015–2021, and null findings are shown here as readily as positive ones.
Frequently asked questions
Is Nootropics Depot or Double Wood tongkat ali better?
They are sold on different promises. Nootropics Depot's capsule is 200 mg of extract standardised to 2% eurycomanone, so the label tells you the active: 4 mg per capsule, verified by HPTLC on published certificates. Double Wood's is 1,000 mg of a 200:1 extract with no active declared; the ratio says 200 g of root went into 1 g of powder, not what came out. At current prices Nootropics Depot is $0.32 a day and Double Wood $0.42, so the standardised product is also the cheaper one. If you want to know what you are taking, Nootropics Depot; Double Wood's case is the bigger capsule at a lower price per milligram of extract.
What does 200:1 tongkat ali mean?
That 200 kilograms of root were reduced to 1 kilogram of extract. It is a concentration claim about the process, not a potency claim about the product, because it says nothing about how much eurycomanone (the marker the human trials measured) survived. Two 200:1 products can differ several-fold in active content. A standardised label, such as 2% eurycomanone, is the only way to compare doses.
How much tongkat ali did the trials use?
Mostly 200 to 400 mg a day of a standardised water extract. The stress-hormone study used 200 mg a day of a standardised extract for four weeks and reported lower cortisol and better mood scores (Talbott 2013); the quality-of-life and sexual well-being trial used 300 mg a day of a freeze-dried water extract for 12 weeks (Ismail 2012). Both used standardised material, which is the point: an unstandardised 1,000 mg is not obviously more than a standardised 200.
Is tongkat ali third-party tested?
Nootropics Depot publishes certificates of analysis for its lots, including HPTLC identity and eurycomanone assays; Double Wood states third-party testing on its label; we did not verify a published certificate for this product. Neither is in the NSF, USP or Informed Sport registries; the one tongkat in a registry is Momentous (Informed Sport). Heavy metals are the contaminant that matters for a root extract, so look for that line on whichever certificate you are shown.
Which should a drug-tested athlete buy?
Neither of these two, unless your federation accepts a brand certificate: pick a product in a banned-substance registry, such as Momentous Tongkat Ali (Informed Sport). Tongkat itself is not banned, but the registry is what protects you from what else might be in the capsule.
Related
- Cheapest tongkat ali per dose: every product with its declared active shown
- Best tongkat ali, ranked
- Tongkat ali products compared
- Tongkat ali dosage guide
Sources
- Talbott SM, et al. “Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed subjects.” J Int Soc Sports Nutr. 2013. PMID: 23705671
- Ismail SB, et al. “Randomized Clinical Trial on the Use of PHYSTA Freeze-Dried Water Extract of Eurycoma longifolia for the Improvement of Quality of Life and Sexual Well-Being in Men.” Evid Based Complement Alternat Med. 2012. PMID: 23243445
- Tambi MI, et al. “Standardised water-soluble extract of Eurycoma longifolia, Tongkat ali, as testosterone booster for managing men with late-onset hypogonadism?” Andrologia. 2012. PMID: 21671978
- Henkel RR, et al. “Tongkat Ali as a potential herbal supplement for physically active male and female seniors: a pilot study.” Phytother Res. 2014. PMID: 23754792
- Product labels: Nootropics Depot Tongkat Ali 2% Eurycomanone and Double Wood Tongkat Ali 200:1; Amazon prices verified 2026-09-17.