Name: Double Wood Tongkat Ali Extract 200:1
Brand: Double Wood

Verdict: WATCH. EDE Score 62/100. Double Wood Tongkat Ali 200:1 is a budget-priced Eurycoma longifolia product that gets the marketing of Tongkat Ali right but fails on the one specification that determines whether it actually works: eurycomanone percentage. Every Tongkat Ali clinical RCT in the testosterone literature uses extracts standardized to a known eurycomanone or eurypeptide content (Physta, LJ100, or HPTLC-verified 2 percent). Double Wood discloses a 200:1 extraction ratio but no standardized active marker. The extract is sourced from China, where Tongkat Ali is not native, and the product is bundled with Tribulus Terrestris in a complex rather than sold as a single ingredient. Cheap, yes. Verifiably effective, no. WATCH means we cannot recommend it confidently, but it is not actively harmful and may work for some users; we are flagging it for caution rather than skipping it outright.

This article contains paid links. We may earn a commission if you purchase through these links. These commissions never influence our scoring.

At a glance

Metric	Value
Brand	Double Wood Supplements
Product	Tongkat Ali Extract 200:1 (Tongkat Complex)
Form	Vegetarian capsule
Servings per bottle	60 (2 capsules per serving)
Capsules per bottle	120
Active ingredients per serving	Eurycoma longifolia 200:1 extract 1,000 mg + Tribulus Terrestris 20 mg
Eurycomanone percentage disclosed	NO (this is the central problem)
Source country (extract)	China (per third-party reporting; not native habitat)
Price (Amazon, typical)	$22.00
CPED (at 1,000 mg/day standard dose)	$0.37 per effective day
Best-in-class CPED for standardized Tongkat	$0.80 to $1.50 (LJ100, Physta, Nootropics Depot 2 percent)
Third-party certification	Heavy metals + identity testing (NOT NSF Certified for Sport)
EDE Score	62/100
Verdict	WATCH

Why this product matters for men 40+

Tongkat Ali (Eurycoma longifolia) is one of the most-cited herbal interventions for testosterone optimization in men 40+ with declining androgen status. A 2022 systematic review and meta-analysis of clinical trials in Medicina (Leisegang and colleagues) reported a significant pooled effect on total testosterone (SMD 1.352, 95 percent CI 0.565 to 2.138, p = 0.001), with the largest effects observed in men with hypogonadism¹. A frequently-cited 2012 trial by Tambi and colleagues found that 200 mg/day of standardized Tongkat extract normalized testosterone in 90.8 percent of late-onset hypogonadism patients over 1 month².

The clinical evidence is real. The problem is that "Tongkat Ali" on a supplement label is a near-meaningless claim without a standardized bioactive marker. The trials that produced the testosterone effect used specific extracts: Physta (water-soluble, standardized to 22 percent eurypeptides), LJ100 (also standardized to 22 percent eurypeptides and 40 percent glycosaponins), or HPTLC-verified extracts at 2 percent eurycomanone (the active quassinoid). Generic 200:1 extracts that do not disclose eurycomanone content are clinically ambiguous.

For Double Wood Tongkat Ali 200:1, the absence of standardized eurycomanone disclosure is the single most consequential gap between this product and the clinical trial literature.

Editorial commentary

What we are paying attention to with this product: Double Wood has positioned itself as a budget-friendly direct-to-consumer brand with reasonable third-party testing for heavy metals and product identity. For many supplements (zinc, magnesium, basic minerals where the active is straightforward), this positioning works. For Tongkat Ali, it does not work without one additional disclosure: eurycomanone percentage.

Why eurycomanone matters specifically: Tongkat Ali root contains a complex mix of quassinoids, eurypeptides, glycosaponins, and other phytochemicals. The bioactive responsible for the testosterone effect is primarily eurycomanone (and related eurypeptides), which inhibits aromatase and stimulates LH release. A 200:1 extraction ratio describes the concentration step (200 grams of raw root reduced to 1 gram of extract) but says nothing about how much eurycomanone is actually in the final product. Two products labeled "200:1" can contain anywhere from 0.5 percent to 5 percent eurycomanone depending on the source root quality, extraction solvent, and processing.

Compare with the alternatives: Nootropics Depot Tongkat Ali Extract is HPTLC-verified to 2 percent eurycomanone minimum on every batch, with batch certificates available. Double Wood's own LJ100 SKU (a different product) discloses 22 percent eurypeptides and 40 percent glycosaponins. Momentous Tongkat Ali is Informed Sport Certified at a standardized dose. The brands that take Tongkat Ali seriously disclose what is actually in the bottle.

Second concern: the Tribulus Terrestris bundling. Adding 20 mg of Tribulus to the formulation muddies the testosterone story (Tribulus has weak human evidence for testosterone effects in men with normal baseline). The label calls this a "Tongkat Ali Complex" rather than a single-ingredient extract, which creates a proprietary-blend-adjacent situation where you cannot isolate which component is producing any effect you might experience.

Third concern: source country. Industry reporting and direct manufacturer statements indicate that Double Wood's Tongkat Ali extract is sourced from China. Tongkat Ali is not native to China; the plant is endemic to Southeast Asia (Malaysia, Indonesia, Thailand). Chinese manufacturers typically import raw root from Indonesia (sometimes through Malaysia despite Malaysian export restrictions) and process at lower-cost facilities. This is not automatically lower quality, but it is a deviation from the supply chain that produces the clinical trial extracts (which are predominantly Malaysian-sourced).

The price is genuinely competitive at $22 per 60-serving bottle. For comparison, Nootropics Depot's HPTLC-verified equivalent runs $30 for 60 servings, and LJ100 products run $35 to $50. The price difference is real, but is being paid for in specification gaps.

What is actually in it

Ingredient	Form	Dose per serving	Clinical effective dose	% of effective dose	Evidence level
Eurycoma longifolia	200:1 root extract (eurycomanone% not disclosed)	1,000 mg	200-400 mg standardized (Physta/LJ100) or 600-1,000 mg verified 2% eurycomanone	Unknown without standardization	Strong (for standardized extracts)
Tribulus Terrestris	Fruit extract, 40% saponins	20 mg	250-1,500 mg/day in trials	Sub-clinical (1-8% of trial doses)	Weak (in normal-T men)

Other ingredients: Hypromellose (capsule), rice flour.

The label gaps are the central editorial issue. The dose of Tongkat Ali extract is generous in raw weight (1,000 mg), but raw weight without active marker disclosure does not translate to clinical efficacy. The Tribulus addition at 20 mg is well below any dose used in human trials (250 to 1,500 mg/day in published studies) and is functionally a marketing inclusion rather than a clinically meaningful component.

EDE Score breakdown

Criterion	Weight	Score (0-100)	Weighted	Notes
Dose Efficacy	30%	60	18.0	1,000 mg 200:1 extract is generous in raw weight, but no eurycomanone% disclosed = clinical efficacy unverifiable.
Bioavailability	20%	65	13.0	Standard powder extract, no enhanced delivery format. Bioavailability unknown without active marker quantification.
Third-Party Testing	15%	60	9.0	Tested for heavy metals and identity; certificates not publicly accessible. NOT NSF Certified for Sport.
Label Transparency	15%	55	8.25	Discloses 200:1 ratio and Tribulus dose, but does NOT disclose eurycomanone%, source country, or standardization batch data.
Manufacturer Reputation	10%	70	7.0	Double Wood is a credible budget DTC brand for simple actives; weaker on complex botanicals where standardization matters.
Community Sentiment	5%	50	2.5	Default in Phase 1, enriched Q3 2026.
Price Per Effective Dose	5%	75	3.75	$0.37/day = mid-tier; cheap is not the same as effective.
EDE Score	100%		62 / 100	WATCH

See our methodology for the full formula, weights, and tier definitions.

What we like

Price is genuinely competitive. $22 for a 60-serving bottle is one of the cheapest Tongkat Ali entries on Amazon. If the active content matched the price-tier expectation, this would be a strong BUY.
Heavy metals testing is performed. Double Wood does test for lead, cadmium, arsenic, and mercury. This is the absolute minimum for any botanical extract sourced from outside the US, and is a real positive.
Vegetarian capsule, simple excipients. Hypromellose capsule, rice flour. No proprietary blend hidden inside the capsule, no synthetic fillers.
The 200:1 extraction ratio is not lying. The product really is a 200:1 concentration. The issue is that 200:1 is necessary but not sufficient for clinical efficacy without the eurycomanone disclosure.
Brand transparency on basic SKUs. Double Wood is reasonably forthcoming about manufacturing standards and has a separate LJ100 SKU for buyers who want the patented standardized extract. The brand is not pretending the budget SKU is the same as the LJ100.

What we don't like

No eurycomanone percentage disclosed. This is the central flaw. Every Tongkat Ali clinical RCT uses standardized extracts; this product is unstandardized. You cannot calculate a clinically-effective dose without knowing the active marker percentage.
Tribulus Terrestris bundling at sub-clinical dose. 20 mg of Tribulus is functionally a label decoration, not an active contribution. Worse, it creates a proprietary-blend-adjacent ambiguity where the brand can claim the formula "supports testosterone" via either active without disclosing which one is doing the work.
Extract sourced from China. Tongkat Ali is not native to China. Chinese manufacturers process imported raw root, often at lower-cost facilities than the Malaysian and Indonesian sources used in clinical trials. Not automatically inferior, but a real deviation from the trial-grade supply chain.
NOT NSF Certified for Sport. No third-party certification beyond basic heavy metals and identity testing. For athletes subject to drug testing, this product carries banned-substance risk that an NSF Certified equivalent would not.
No batch certificates publicly accessible. Double Wood claims third-party testing but does not publish batch-level certificates of analysis on the product page or per-bottle. You are trusting the brand statement rather than verifying the claim.
Bottle is 120 capsules / 60 servings, not 120 servings. Some users misread this and underdose by half. The label says 1,000 mg per serving, which requires 2 capsules. A 1-capsule daily dose delivers 500 mg, half the manufacturer's recommendation.

Cost per effective day (CPED)

Bottle price:                       $22.00 (Amazon, typical)
Servings per bottle:                60 (2 capsules per serving, 120 capsules total)
Total Tongkat 200:1 per bottle:     60 servings * 1,000 mg = 60,000 mg
Manufacturer-recommended dose:      1,000 mg/day (2 capsules)
Days of dosing:                     60,000 mg / 1,000 mg = 60 days
CPED:                               $22.00 / 60 = $0.37 per effective day

Double Wood Tongkat Ali 200:1 costs $0.37 per effective day at the manufacturer's recommended 1,000 mg dose. This sits in the mid-tier of our pricing grid (score 75).

For comparison, the pricing tiers in our zinc and magnesium grids run $0.18 to $0.50 per effective day for top-of-class products. The Tongkat Ali category has a wider range because the standardized clinical-grade extracts (LJ100, Physta) command pricing premiums that reflect the standardization investment. Nootropics Depot HPTLC-verified 2 percent eurycomanone runs about $0.50/day; Double Wood LJ100 (their other SKU) runs about $0.80/day; clinical-grade Physta-based products often run $1.00 to $1.50/day.

The CPED for the 200:1 SKU is genuinely cheap. The question is whether you are paying $0.37/day for an unverifiable active dose, or paying $0.50 to $1.50/day for a clinically-validated dose. The math favors the standardized extract on cost-per-actual-effect, even though the per-bottle price is higher.

Ingredient-by-ingredient analysis

Eurycoma longifolia (200:1 root extract, eurycomanone unspecified)

Dose in this product: 1,000 mg of 200:1 extract per serving (theoretically equivalent to 200 grams of raw root) Clinical effective dose: 200-400 mg/day for standardized extracts (Physta, LJ100); 600-1,000 mg/day for verified 2 percent eurycomanone¹ ² ³ Evidence level: Strong for standardized extracts, ambiguous for unstandardized Verdict for this ingredient: Sufficient raw weight, missing efficacy specification

The clinical literature on Tongkat Ali for testosterone is genuinely promising. The 2022 Leisegang systematic review pooled five RCTs and reported a significant net testosterone increase across both healthy men and hypogonadal patients, with stronger effects in the hypogonadal subgroup¹. A 2012 trial by Tambi and colleagues found that 200 mg/day of a standardized Tongkat extract normalized testosterone in 90.8 percent of androgen-deficient aging male patients over 1 month, with concurrent improvement on the Aging Males' Symptoms (AMS) scale². The 2021 Leitao trial in 45 men with androgen deficiency of aging males found that 200 mg/day of Tongkat for 6 months, combined with concurrent training, significantly improved total testosterone in roughly 50 percent of supplemented participants³.

Three observations from the trial literature that matter for product selection:

All cited trials use standardized extracts. The Tambi study used a Malaysian-sourced standardized water-soluble extract. The Leisegang meta-analysis pooled trials using Physta, LJ100, and similar named extracts. The Leitao study used a 200 mg standardized dose. None of the trials we reviewed used unstandardized 200:1 extracts of unknown eurycomanone content.
Effective doses cluster around 200-400 mg of standardized extract. This is far below the 1,000 mg of unstandardized extract in this product. The 1,000 mg figure is not "more"; it is "different category." Without knowing the eurycomanone percentage, the 1,000 mg of Double Wood 200:1 could deliver more or less active eurycomanone than 200 mg of Physta. There is no way to compare without the disclosure.
Safety signal: EFSA 2021 warning. The European Food Safety Authority issued a 2021 statement that Tongkat Ali has potential to induce DNA damage based on in vitro evidence. Human safety data at typical supplement doses (up to 1,200 mg/day standardized) shows no acute liver or kidney toxicity in studies up to 1 month, but long-term safety data is limited. This warning applies to all Tongkat products, not specifically Double Wood, but is worth knowing.

Tribulus Terrestris (20 mg, 40 percent saponins)

Dose in this product: 20 mg per serving Clinical effective dose: 250-1,500 mg/day in published trials Evidence level: Weak (in men with normal testosterone) Verdict for this ingredient: Sub-clinical dose, marginal evidence base, label decoration rather than active contribution

Tribulus Terrestris has a popular reputation as a testosterone booster that is not well supported by the published literature. Multiple meta-analyses have found no consistent testosterone effect from Tribulus supplementation in men with normal baseline testosterone. The libido effect is more reproducible than the testosterone effect, but still inconsistent.

The 20 mg dose in Double Wood Tongkat Ali Complex is far below the 250 to 1,500 mg/day used in human trials. At 20 mg, this is functionally a label inclusion rather than a clinically active dose. The presence of Tribulus in the formulation does not enhance the Tongkat Ali effect; it simply muddies which ingredient is supposedly producing the testosterone or libido outcome the label markets.

For our scoring, the Tribulus contribution is essentially zero on dose efficacy.

Community sentiment summary

Community sentiment is one signal among seven and is weighted 5% in the EDE Score. In Phase 1 of the DosedWise project, this criterion uses a default neutral score of 50/100. The Reddit Intelligence layer for automated sentiment analysis across r/Testosterone, r/TRT, r/Supplements, and r/Nootropics ships in Q3 2026, at which point this section will be replaced with quantitative sentiment data from the past 90 days.

Anecdotal observation across men's-health and biohacking communities: Double Wood's Tongkat Ali is recognized as a "starter Tongkat" by budget-conscious users, with mixed reports on subjective effects. The most common positive themes are price accessibility and mild libido improvement reported anecdotally. The most common negative themes are the absence of standardized eurycomanone disclosure (frequently flagged on r/Nootropics and r/Testosterone), the China sourcing question, and the Tribulus bundling. Users who graduate from Double Wood to standardized products (Nootropics Depot, LJ100, Momentous) typically report stronger and more reproducible effects, though this is anecdotal and confounded by placebo and dose differences.

This summary is editorial commentary and is not yet weighted into the EDE Score. The score above already accounts for the 5% Community Sentiment weight at the Phase 1 default value.

Compared to alternatives

For Tongkat Ali supplements, here is how Double Wood Tongkat Ali 200:1 compares to top alternatives we have audited:

Product	Eurycomanone Standardization	EDE Score	CPED	Verdict
Nootropics Depot Tongkat Ali Extract (200 mg)	2% verified by HPTLC, batch certs	87/100	$0.50	TOP PICK
Momentous Tongkat Ali (400 mg)	Standardized, Informed Sport Certified	85/100	$1.20	BUY
Double Wood LJ100 Tongkat Ali	LJ100 patented, 22% eurypeptides	82/100	$0.80	BUY
Toniiq Tongkat Ali 1,000 mg (10% eurycomanone)	10% claimed, third-party tested	78/100	$0.45	BUY
Double Wood Tongkat Ali 200:1	None disclosed	62/100	$0.37	WATCH
Generic Amazon Tongkat 100:1 (no specs)	None	35/100	$0.20	SKIP

Double Wood's own LJ100 SKU (a separate product) scores 20 points higher than the 200:1 SKU in our grid. The brand demonstrably knows how to source standardized extracts; the 200:1 product is a budget tier that prioritizes price over efficacy specification.

If you specifically want Double Wood as your brand, choose the LJ100 version (EDE 82, BUY) rather than the 200:1 (EDE 62, WATCH). If brand is flexible, Nootropics Depot's 2 percent verified extract at $0.50/day is our TOP PICK in this category.

Who should buy this

Double Wood Tongkat Ali 200:1 is best for:

Budget-conscious first-time Tongkat Ali users who want to test whether they personally feel any subjective effect before committing to a higher-priced standardized extract.
Users who specifically want the Tongkat-plus-Tribulus combination (rare, but some traditionalists prefer it).
Buyers who already accept the trade-off between price and specification rigor and are willing to absorb the unverifiable potency in exchange for the cost savings.

Double Wood Tongkat Ali 200:1 is NOT for:

Anyone seeking clinically-validated dosing. Without the eurycomanone disclosure, this product cannot be matched to the trial literature, full stop.
Athletes subject to drug testing. No NSF Certified for Sport, no Informed Sport, only basic heavy metals and identity testing.
Buyers willing to spend an additional $5 to $15 per bottle to step up to a standardized extract. The CPED differential disappears once you account for unverifiable active content.
Men with hypogonadism who are using Tongkat as a clinical intervention rather than a wellness experiment. Standardized extracts are the only category supported by the relevant RCTs.

Stacking notes

Tongkat Ali is typically stacked with the rest of the men's-health basics, but the stack only makes sense if the Tongkat product is verifiably bioactive. For this specific SKU, we are recommending caution rather than active stacking.

If you proceed despite the WATCH verdict, the standard Tongkat stack guidelines apply:

Take in the morning or early afternoon. Tongkat has stimulating properties for many users; late-day dosing can disrupt sleep.
Cycle 5 days on, 2 days off is a common protocol to reduce tolerance buildup over multi-month supplementation, although the human evidence base for cycling is anecdotal.
Pair with adequate vitamin D, zinc, and magnesium status. Tongkat works on the existing testosterone synthesis machinery; if your foundational micronutrients are deficient, no Tongkat product (standardized or not) will produce the trial effects.
Avoid concurrent use with anticoagulants or hormone-sensitive medications. Talk to your physician before adding it to any prescription regimen.

If you want the full picture of the men's-health stack, see our best testosterone supplements for men 40+ pillar and our Tongkat Ali for men 40+ buyer guide.

Better alternatives

If Double Wood Tongkat Ali 200:1 does not meet your specification needs, consider:

Nootropics Depot Tongkat Ali Extract (EDE 87/100, CPED $0.50): The TOP PICK in this category. HPTLC-verified 2 percent eurycomanone on every batch, batch certificates publicly accessible. The pragmatic gold standard at a reasonable price.
Double Wood LJ100 Tongkat Ali (EDE 82/100, CPED $0.80): If you want the Double Wood brand specifically, the LJ100 SKU is the right choice. Patented standardized extract (22 percent eurypeptides, 40 percent glycosaponins) used in the original clinical trials. 20 EDE points above the 200:1 SKU.
Toniiq Tongkat Ali 10 percent eurycomanone (EDE 78/100, CPED $0.45): Higher-claimed eurycomanone percentage at a comparable price tier to Double Wood 200:1. Lab tested but not HPTLC-verified the way Nootropics Depot is. Solid mid-tier BUY.

Frequently asked questions

Is Double Wood Tongkat Ali 200:1 worth buying?

Maybe, depending on what you are buying it for. With an EDE Score of 62/100, this is a WATCH-tier product, which means we cannot confidently recommend it but we are not actively warning against it either. If you want to spend $22 to test whether you personally notice any subjective effect from Tongkat Ali before committing to a higher-priced standardized extract, this is a reasonable experiment. If you want a verifiably effective dose matched to the clinical trial literature, this is not the right product.

What does "200:1 extract" actually mean, and why is it not enough?

A 200:1 extraction ratio means that 200 grams of raw Tongkat root were processed and concentrated into 1 gram of extract. That tells you the concentration step occurred. It does not tell you how much eurycomanone (the bioactive responsible for the testosterone effect) is in the final extract. Two products both labeled "200:1" can contain anywhere from 0.5 percent to 5 percent eurycomanone depending on the source root quality, extraction solvent, and processing method. Without the eurycomanone disclosure, you cannot calculate a clinically-effective dose.

Why does this product include Tribulus Terrestris?

Marketing. Tribulus Terrestris has popular reputation as a testosterone booster despite weak human evidence in men with normal baseline testosterone. The 20 mg dose in this product is far below the 250 to 1,500 mg/day used in published trials, so the Tribulus contribution is essentially zero on dose efficacy. It is functionally a label decoration that creates a proprietary-blend-adjacent ambiguity ("which ingredient is doing the work?") without adding meaningful active content.

Is Double Wood Tongkat Ali sourced from Malaysia or Indonesia?

According to industry reporting and direct manufacturer statements, Double Wood's Tongkat Ali extract is sourced from China. Tongkat Ali is not native to China; the plant is endemic to Southeast Asia (Malaysia, Indonesia, Thailand). Chinese manufacturers typically import raw root from Indonesia and process at lower-cost facilities than the Malaysian sources used in clinical trials. This is not automatically lower quality, but it is a deviation from the supply chain that produces the trial extracts.

Why does Double Wood get WATCH but their LJ100 SKU gets BUY?

Different products, different specifications. Double Wood's LJ100 Tongkat Ali uses the patented LJ100 extract from HP Ingredients, standardized to 22 percent eurypeptides and 40 percent glycosaponins, with the same source material used in the original Tambi 2012 hypogonadism trial². The 200:1 SKU is an unstandardized budget version sourced from a different supply chain. Same brand, different products, different EDE scores.

Will this product raise my testosterone?

Without the eurycomanone disclosure, we cannot say. The clinical literature on standardized Tongkat Ali extracts is genuinely promising¹ ² ³; the 2022 Leisegang meta-analysis reported a significant pooled testosterone effect across five RCTs¹. Whether this specific product contains enough eurycomanone to replicate that effect is not knowable from the label. Some users report subjective effects; others do not. The placebo response in herbal testosterone products is substantial.

Where to buy

This product is widely available across US retailers. Pricing as of audit date (2026-05-03):

Double Wood direct at the official site. Subscribe-and-save discounts available.
Amazon is the most common purchase channel for this product, typically $21 to $23 with Subscribe-and-Save discount.
Walmart stocks this product at comparable pricing.

If you decide a different Tongkat product is the better fit, Nootropics Depot Tongkat Ali Extract at HPTLC-verified 2 percent eurycomanone is our TOP PICK in this category.

Final verdict

WATCH: Double Wood Tongkat Ali 200:1 fails the one specification that determines whether a Tongkat Ali product matches the clinical literature: eurycomanone disclosure.

The EDE Score of 62/100 reflects a product with reasonable manufacturing basics (heavy metals testing, simple excipients, vegetarian capsule, competitive price) but inadequate active-ingredient specification for confident clinical dosing. The 200:1 extraction ratio is not lying, but is not sufficient. The Tribulus bundling is a marketing inclusion at sub-clinical dose. The China sourcing is a deviation from the trial-grade supply chain. The cumulative effect is a product that may work for some users but cannot be confidently matched to the published RCT literature.

WATCH is not the same as SKIP. SKIP is reserved for products with clear evidence of low value (proprietary blends, severely underdosed actives, demonstrated misleading marketing). Double Wood Tongkat Ali 200:1 is not that. It is a budget-tier product whose specification gaps make confident recommendation impossible. We are flagging it for caution, not banishing it.

If you want Tongkat Ali confidently dosed to the clinical trial literature:

Choose Nootropics Depot Tongkat Ali Extract (HPTLC-verified 2 percent eurycomanone, EDE 87, CPED $0.50)
Or choose Double Wood LJ100 (patented standardized extract, EDE 82, CPED $0.80)

If you proceed with Double Wood Tongkat Ali 200:1 anyway, you can buy it on Amazon (paid link).

Methodology and disclosures

This review uses the DosedWise Methodology v1.0. The EDE Score formula is:

EDE Score =
  (Dose Efficacy * 0.30) +
  (Bioavailability * 0.20) +
  (Third-Party Testing * 0.15) +
  (Label Transparency * 0.15) +
  (Manufacturer Reputation * 0.10) +
  (Community Sentiment * 0.05) +
  (Price Per Effective Dose * 0.05)

DosedWise earned no payment from Double Wood for this review. We may earn affiliate commissions when readers purchase through links on this page. These commissions never influence scoring. Read our editorial policy.

This article is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before starting any supplement, especially if you have a medical condition or take prescription medications.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

The European Food Safety Authority issued a 2021 statement that Tongkat Ali has potential to induce DNA damage based on in vitro evidence. Long-term human safety data is limited. Consult a qualified physician before chronic use.

Community Sentiment is set to a default of 50 in Phase 1 of the DosedWise project. This criterion will be enriched with Reddit and forum data via the DosedWise Reddit Intelligence layer in Q3 2026, at which point this review will be revised.

References

Published: 2026-05-03 Last reviewed: 2026-05-03 Next scheduled review: 2026-11-03 (every 6 months minimum) Author: DosedWise Editorial Team

Leisegang K, Finelli R, Sikka SC, Panner Selvam MK. Eurycoma longifolia (Jack) Improves Serum Total Testosterone in Men: A Systematic Review and Meta-Analysis of Clinical Trials. Medicina (Kaunas). 2022 Aug 4;58(8):1047. PubMed PMID: 36013514 / PMC9415500. Meta-analysis of 5 RCTs reporting significant pooled testosterone increase (SMD 1.352, 95% CI 0.565 to 2.138, p = 0.001) in men supplemented with standardized E. longifolia extracts. ↩ ↩² ↩³ ↩⁴ ↩⁵
Tambi MI, Imran MK, Henkel RR. Standardised water-soluble extract of Eurycoma longifolia, Tongkat ali, as testosterone booster for managing men with late-onset hypogonadism? Andrologia. 2012 May;44 Suppl 1:226-30. PubMed PMID: 21671978. 200 mg/day standardized water-soluble extract over 1 month normalized testosterone in 90.8% of late-onset hypogonadism patients. ↩ ↩² ↩³ ↩⁴ ↩⁵
Leitao AE, Vieira MCS, Pelegrini A, da Silva EL, Guimaraes ACA. 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 Mar;145:78-85. 6-month RCT in 45 men with androgen deficiency aging males; 200 mg/day E. longifolia plus concurrent training improved testosterone in roughly 50% of supplemented participants. ↩ ↩² ↩³