Tongkat Ali — for testosterone and libido: dosage (table)
Tongkat Ali: dosage chart, how much to take, when, and how to start. A practical guide from Bucha.
Tongkat Ali (Eurycoma longifolia), also known as longjack, is a Malaysian root used in traditional medicine for centuries. Today, it is one of the better-researched adaptogens with androgenic effects. A randomized clinical trial published in Evidence-Based Complementary and Alternative Medicine showed that 200 mg of standardized tongkat ali extract increased total testosterone levels by 37% after 4 weeks in men with stress and reduced libido (Tambi et al., PMC 2012). But how much to take, when, and what extract to look for? This article organizes these issues in one dosage table.
KEY INFORMATION
• Clinical study confirms a 37% increase in testosterone after 4 weeks at 200 mg/day (Tambi et al., PMC 2012).
• The standard clinical dose is 200–400 mg of standardized extract in the morning.
• Effects (energy, libido) are noticeable after 2–4 weeks; full testosterone level tests after 8–12 weeks.
• Take in the morning — evening intake may cause insomnia.
• Look for an extract standardized for eurycomanone ≥1% or polysaccharides ≥30%.
What is tongkat ali and how does it affect testosterone?
Tongkat Ali is the root of a tree Eurycoma longifolia, growing in Malaysia, Indonesia, and Thailand. The main bioactive components are eurycomanones (quassinoids), polysaccharides, and glycosaponins. The mechanism of action on testosterone is indirect — tongkat ali does not contain hormones or their precursors, but acts on the hypothalamic-pituitary-gonadal (HPG) axis.
Eurycomanon inhibits the activity of aromatase — the enzyme that converts testosterone to estrogen. At the same time, it stimulates Leydig cells in the testes to increase testosterone production via the cyclic AMP pathway. Tongkat ali also lowers levels of sex hormone-binding globulin (SHBG), which increases the biologically available fraction of free testosterone (Tambi et al., 2012).
Important note: tongkat ali works effectively in men with subclinically low testosterone (fatigue, stress, age 40+). In young, healthy men with normal testosterone levels, the effects are more modest — the body has natural mechanisms to limit excessive androgen production. This is not a doping agent, but a physiological modulator.
Tongkat ali dosage table
A key parameter is not only the dose in mg but also the quality of the extract. A study from Journal of the International Society of Sports Nutrition showed that 400 mg of tongkat ali daily for 5 weeks improved muscle strength and body composition in physically active men and women over 50 years old (Hamzah and Yusof, PMC 2003). Below is the dosage table according to the goal and user profile.
| Goal / profile | Daily dose | Time | Treatment time | Notes |
|---|---|---|---|---|
| Support for libido, overall vitality (men aged 30–50) | 200 mg | In the morning with a meal | 8–12 weeks | Starting dose — the most popular in studies |
| Support for testosterone after age 40 | 200–400 mg | In the morning | 12 weeks, then 4 weeks break | Monitor testosterone before and after treatment |
| Sports and body composition (strength, muscle mass) | 400 mg | In the morning or before training | 5–8 weeks | In combination with strength training |
| Stress reduction, general adaptogen | 200 mg | In the morning | 4–8 weeks | Studies show a decrease in cortisol and an improvement in mood |
| Women (libido, energy) | 100–200 mg | In the morning | 4–8 weeks | Fewer studies in women; use cautiously during pregnancy and lactation |
When will the effects be visible and how to measure them?
Tongkat ali does not act like a stimulant — you won't feel the effect after the first capsule. The mechanism of action takes time as it modulates the hormonal axis. A study by Tambi and colleagues showed that after 4 weeks, 76% of participants achieved normal testosterone levels from borderline or low levels (PMC3518798). Subjective effects (energy, libido, mood) usually appear earlier — after 2–3 weeks.
How to objectively assess effectiveness? Test testosterone (total and free) and SHBG before starting treatment and after 8–12 weeks. This is the only reliable method of assessment. Without laboratory tests, you are only evaluating subjective feelings, which may result from the placebo effect or improvement in overall health unrelated to testosterone. Tests are relatively inexpensive and provide a reliable reference point.
We've noticed that users who quit after two weeks due to "lack of results" most often don't give the supplement time to work. Tongkat ali works subtly and gradually—compare your energy and libido after six weeks, not 14 days.
How to choose a good tongkat ali extract?
The tongkat ali supplement market is dominated by products of questionable quality. Two important parameters are the extraction ratio and standardization for specific active ingredients.
The extraction ratio (100:1, 200:1) indicates how much raw material was used to obtain 1 g of extract — but it does not guarantee the concentration of active compounds. A 100:1 product may be stronger than a 200:1 if it is better standardized. Look for extracts with declared eurycomanone content (min. 0.8–1%) or polysaccharides (min. 30%) and glycosaponins (min. 22%). Reputable manufacturers provide HPLC test results on the label or upon request.
It is estimated that the testosterone supplement market is worth over $5 billion globally (Grand View Research, 2024), which attracts manufacturers selling products of dubious quality. NSF for Sport or Informed Sport certifications confirm both the content of declared ingredients and the absence of banned substances — particularly important for athletes subject to anti-doping testing.
Tongkat ali and semen quality and male fertility
In addition to testosterone, tongkat ali has also been studied for its effects on semen parameters — an important area for men planning fatherhood. A pilot study involving 75 men with idiopathic infertility showed that 3 months of supplementation with 200 mg of tongkat ali daily improved sperm motility and morphology, with a spontaneous pregnancy rate of 14.7% in the study group compared to 2.6% in the control group (Tambi et al., Asian Journal of Andrology 2012). The results are preliminary and require confirmation in larger trials, but they open an interesting direction for research.
The mechanism of action on fertility is multifaceted: higher levels of free testosterone promote spermatogenesis, reduced SHBG increases the biological availability of androgens, and the antioxidant action of eurycomanones may protect sperm DNA from oxidative damage. Tongkat ali is not an approved treatment for infertility — a consultation with an andrologist is necessary in the case of confirmed fertility issues.
Tongkat ali and cortisol — the adaptogenic aspect of action
Tongkat ali is not a classic adaptogen like ashwagandha or rhodiola, but it exhibits properties that modulate the HPA axis (hypothalamus-pituitary-adrenal) — the same one influenced by adaptogens. A randomized study involving 63 participants with moderate stress showed that 200 mg of tongkat ali daily for 4 weeks reduced cortisol levels in saliva by 16% and improved subjective feelings of tension and anger (Tambi et al., PMC 2012). This is important because cortisol is a direct antagonist of testosterone — lowering one supports the increase of the other.
The relationship between stress and testosterone is well documented: chronic stress suppresses the HPG axis through elevated cortisol and CRH (corticotropin-releasing hormone). Tongkat ali, acting on both axes — stimulating HPG and inhibiting excessive activation of HPA — may be particularly valuable for men with low testosterone due to chronic work-related stress or burnout. This is a scenario where combining tongkat ali with ashwagandha (a stronger adaptogen) has strong mechanistic justification.
Tongkat ali for women — does it make sense?
Testosterone is not exclusively a male hormone — women produce it in their ovaries and adrenal glands, and its role in libido, energy, and body composition is well documented. Testosterone levels in women decline with age (especially after menopause) and with hormonal contraceptive use. Tongkat ali in doses of 100–200 mg daily has been studied in women and showed improvements in libido and energy, although the scale of studies is smaller than in men.
A key difference: in women, the androgenic effect must be more subtle — excess testosterone can cause undesirable effects (acne, hirsutism). Therefore, doses for women are lower (table above: 100–200 mg), and treatments are shorter. Pregnant and breastfeeding women should absolutely avoid tongkat ali due to a lack of safety data. With hormonal contraception, it is advisable to discuss use with a gynecologist — the mechanisms of interaction are not fully studied.
Safety and contraindications
A safety review of tongkat ali conducted by the Malaysian regulatory authority Pharmaceutical Services Programme in 2016 and clinical studies indicate that standardized extracts are safe at doses up to 400 mg daily for 12 weeks (Tambi et al., 2012). Hepatotoxicity was not observed with standardized extracts — cases of hepatotoxicity were associated with non-standardized or contaminated products.
Absolute contraindications: hormone-dependent cancers (prostate cancer, breast cancer), pregnancy, and lactation. Relative: hypertension (tongkat ali may slightly raise blood pressure), hormone therapy (risk of interaction with exogenous testosterone), immunosuppressive drugs. Tongkat ali stimulates the immune system — in individuals post-transplant, this may be risky.
Frequently Asked Questions
How many mg of tongkat ali should I take daily?
The standard clinical dose is 200–400 mg of standardized extract daily, taken in the morning with a meal. Clinical studies most commonly used 200 mg for 4–12 weeks (Tambi et al., 2012). Higher doses (400–600 mg) are used as support in sports, but do not show a clear advantage over 200 mg for most purposes.
How quickly does tongkat ali raise testosterone?
The first subjective effects (energy, libido) appear after 2–4 weeks. Increases in total and free testosterone are documented in studies after 4–12 weeks of regular use. Tongkat ali modulates the HPA and HPG axes — this is a process that takes time and does not work immediately.
Does tongkat ali have side effects?
At doses of 200–400 mg, it was well tolerated in clinical studies. The most common side effects include insomnia when taken in the evening, agitation, and a possible increase in blood pressure. Take it in the morning. Avoid in cases of hormone-dependent cancers, during pregnancy, and with uncontrolled hypertension.
Can tongkat ali be combined with ashwagandha?
Yes, it is a complementary combination. Tongkat ali stimulates the HPG axis and raises testosterone levels, while ashwagandha lowers cortisol — and high cortisol reduces testosterone. The mechanisms complement each other without known negative interactions. This combination is popular in adaptogenic supplementation circles.
Tongkat ali 100:1 or 200:1 — which extract to choose?
The extraction ratio does not guarantee quality — standardization for eurycomanon (min. 1%) or polysaccharides (min. 30%) is more important. An unstandardized 200:1 extract may be weaker than a standardized 10:1. Look for NSF or Informed Sport certifications as proof of quality.
How to use tongkat ali — in cycles or daily?
Most studies used it daily for 4–12 weeks. Cyclical use (5 days a week, 2 days off or 8 weeks of treatment followed by 2–4 weeks off) is popular as a precautionary approach, but there is a lack of RCT comparing both protocols. Both are used and both have practical justification.
Does tongkat ali affect male fertility?
A pilot study involving 75 men with idiopathic infertility showed improvement in sperm motility and morphology after 3 months of taking 200 mg of tongkat ali daily. The spontaneous pregnancy rate was 14.7% in the study group vs 2.6% in the control group (Tambi et al., Asian Journal of Andrology 2012). The results are preliminary — tongkat ali is not an approved treatment for infertility, but it may be considered as a supplement under the supervision of an andrologist.
Does tongkat ali lower cortisol?
Yes. A randomized study with 63 participants showed a 16% reduction in salivary cortisol and improvement in subjective stress symptoms after 4 weeks at 200 mg daily (Tambi et al., PMC 2012). Lowering cortisol is significant because chronically high cortisol suppresses testosterone production — thus, tongkat ali works in two ways: it stimulates the HPG axis and limits cortisol suppression.
Does tongkat ali work for women?
Yes, although there are fewer studies on women. Testosterone plays a role in female libido, energy, and body composition — its levels drop after menopause and with oral contraception. Lower doses are used than in men (100–200 mg daily) and shorter treatment periods. Pregnant and breastfeeding women should strictly avoid tongkat ali due to a lack of safety data in these groups.
This article is for informational and educational purposes and does not replace consultation with a doctor. If you are pregnant, breastfeeding, taking medications, or have chronic conditions, consult the use of supplements or herbs with a specialist.
Author: Michał Waluk · Published: 2026-05-04 · Updated: 2026-05-04
