Tongkat Ali (Eurycoma longifolia): What the Randomised Trials Show for Men

Tongkat Ali is the most-researched herb in men's vitality formulas. Here is what the Malaysian root does, the trials on cortisol, testosterone, libido and body composition, the standardised doses and the cautions.

A Malaysian Root

Eurycoma longifolia is a tall shrub whose root has been used across Malaysia and Indonesia as a tonic for energy, stamina and male vitality. The active fraction is a group of quassinoids, chiefly eurycomanone, and most research uses a water extract standardised to them, often labelled LJ100 or Physta. It is not a stimulant and works, if it works, over weeks.

The Trials

A randomised trial in moderately stressed adults found four weeks of 200 mg a day reduced cortisol by about 16%, raised testosterone by about 37% from a low baseline and improved tension, anger and confusion scores. Trials in older men with low-normal testosterone at 200–400 mg a day report increases into the normal range. Small trials show improved libido scores and, in men on a training programme, modest gains in muscle and strength. A 2022 systematic review concluded the evidence for testosterone support is consistent but based on small samples.

Doses and Standardisation

Effective doses in trials are 200–400 mg a day of a standardised water extract. Raw root powder is weaker and needs grams. Extract quality varies widely and adulteration has been found in some commercial products, which makes a named, reputable extract matter. Amounts in gummies and multi-ingredient blends are usually undisclosed and below trial doses.

Cautions

Well tolerated in trials up to 600 mg a day. Not recommended for men with hormone-sensitive cancers, those on testosterone therapy without medical advice, people with immune or kidney conditions, or anyone under 18. Some batches tested high in mercury, another reason to buy from reputable sources. It may mildly lower blood glucose.

Where HoneyBoost Fits

Tongkat Ali is the lead ingredient in HoneyBoost and the one with the strongest trial record. Our review page quotes the 200–400 mg research dose and states that HoneyBoost's amount is not printed and that a gummy holds less than a capsule. Read the full breakdown on the HoneyBoost official website, including ingredients, customer reviews and current pricing.

Key Takeaways

• Standardised water extract, 200–400 mg/day, is the trial dose.
• Four weeks reduced cortisol ~16% and raised low testosterone ~37%.
• Evidence is consistent but from small trials.
• Avoid with hormone-sensitive conditions; buy reputable extract.

Frequently Asked Questions

How long does Tongkat Ali take to work?

Trials report changes at four to twelve weeks; it is not an on-demand ingredient.

Does Tongkat Ali raise testosterone in healthy young men?

Mainly in men with low or low-normal levels or under stress; effects in young men with normal levels are small.

How much Tongkat Ali is in HoneyBoost?

Not printed on the label; our review says so and gives the research range for comparison.

Sources

• Talbott et al. 2013, JISSN: Eurycoma longifolia and stress hormones (PubMed)
• PubMed: Eurycoma longifolia testosterone systematic review