Tongkat Ali, also known as Eurycoma longifolia or longjack, is an herb that has been shown to increase libido across a range of human populations.
It’s known to increase free testosterone by reducing sex hormone-binding globulin, which can have potent effects.
The dosage is typically 400 milligrams per day capsules but can range from 200 to 600 milligrams per day depending on body size and individual response.
In this post, we will cover everything Huberman has shared about Tongkat Ali, the supplement’s benefits, and the best way to take it.
Who Is Profesor Andrew Huberman?

Professor Andrew Huberman, Ph.D., is a neuroscientist at Stanford School of Medicine.
He researches brain development, function, and neural plasticity.
In addition to his clinical work, Huberman hosts the Huberman Lab podcast, where he interviews subject matter experts and provides in-depth lectures on various health-related protocols and concepts.
What Is Tongkat Ali?
Tongkat Ali, also known as Eurycoma longifolia or Long Jack, is a substance that has been shown to increase libido and optimize fertility in both males and females.
It’s an herb with Malaysian and Indonesian varieties, with the Indonesian variety being most potent for its effects on libido.
- 100% root powder in its most natural form
- Support testosterone production
- Enhance energy and mood
When taken at a dosage of 400 milligrams per day, it has been shown to increase free testosterone by reducing something called sex hormone-binding globulin.
This leads to a subtle but significant increase in libido and some of the other parameters associated with increased androgens.
Androgens, primarily testosterone, play a pivotal role in regulating sexual desire, muscle mass, bone density, and other vital physiological functions.
It’s typically taken early in the day due to its stimulating effects.
The idea of cycling supplements comes from the belief that continuous use might lead to tolerance, where more of the supplement is needed for the same effect, or that the body might downregulate its production of certain compounds in response.
Some users of Tongkat Ali choose to cycle it to maximize its benefits and minimize potential side effects.
Huberman has suggested that there’s potentially no benefit from cycling Tongkat Ali, adding that its effects on libido and hormone profiles tend to increase over time.
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Tongkat Ali Benefits
In recent years, Tongkat Ali has gained attention in the realm of modern herbal therapeutics thanks to its multifaceted benefits.
Below you can find some of the benefits, as well as scientific literature that has
Benefit | Description | Impact |
---|---|---|
Hormone Adjustment | Tongkat Ali acts as an adaptogen, subtly adjusting hormone levels in the body without disrupting the body’s own production. This helps maintain optimal balance, supporting overall physiological and psychological health. | Beneficial for overall health and well-being. Particularly useful for stress management and hormonal balance. |
Increased Free Testosterone | Tongkat Ali can enhance free testosterone levels by reducing sex hormone binding globulin (SHBG), which inhibits sex hormones’ function. More free testosterone can increase libido and improve other parameters associated with increased androgens. | Can enhance libido, muscle mass, and overall vitality, particularly in men. May also contribute to mood enhancement. |
Improved Spermatogenesis | In males, increased androgen levels, facilitated by Tongkat Ali, can lead to improved spermatogenesis, or sperm cell production. | Could be beneficial for men wishing to optimize their fertility or conceive. Provides a natural alternative to conventional fertility treatments. |
Stimulating Effect | Tongkat Ali has a mild stimulating effect. It’s not typically anxiety-provoking, but it is usually taken early in the day due to this effect. | Can improve energy levels and reduce fatigue. Beneficial for both mental and physical performance. |
Increased Libido | Tongkat Ali can enhance libido and sexual function in both men and women. | May improve sexual desire, satisfaction, and overall sexual health. Particularly useful for individuals experiencing decreased libido or sexual dysfunction. |
Hormone Adjustment
Tongkat Ali is well-regarded for its hormone regulation abilities.
It subtly adjusts hormone levels, serving as an adaptogen that helps the body maintain optimal balance.
This regulation can be beneficial for both men and women, as it supports overall physiological and psychological health without disrupting the body’s endogenous production of hormones.
In a 2013 scientific literature review, the authors found Tongkat Ali as a promising alternative to testosterone replacement therapy (TRT) with no apparent side effects at clinical dosages.
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Increased Free Testosterone
Another notable benefit of Tongkat Ali that has been studied is its capacity to increase free testosterone levels.
By reducing the production of sex hormone binding globulin (SHBG), more free testosterone becomes available.
This process can lead to a subtle but significant increase in libido and other parameters associated with increased androgens.
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Improved Spermatogenesis
For males seeking to optimize their fertility, Tongkat Ali offers significant benefits.
Increased androgen levels facilitated by supplementation can improve spermatogenesis or sperm cell production.
As a natural fertility enhancer, Tongkat Ali presents a favorable alternative to conventional fertility treatments with fewer potential side effects.
One study, in particular, found a marked improvement in male fertility metrics in patients taking 200mg daily for a period of 9 months.
Stimulating Effect
While Tongkat Ali is celebrated for its health benefits, it’s essential to note that it may have a mildly stimulating effect.
It’s typically not anxiety-provoking, but it is usually taken early in the day due to this effect.
It can help improve energy levels and reduce fatigue, contributing to better performance in daily activities.
This study found significant tension, anger, and confusion improvements after Tongkat Ali supplementation.

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Increased Libido
Reports suggest that Tongkat Ali can enhance libido and sexual function in both men and women.
As an aphrodisiac, it may not only improve sexual desire but also support sexual performance and satisfaction, contributing to overall sexual health.
Huberman Tongkat Ali Dosage
Huberman typically takes 400 milligrams per day, usually early in the day.
This is because Tongkat Ali has a bit of a stimulant effect.
Huberman has said that if he takes it after 2:00 p.m., the supplement tends to inhibit his sleep quality.
Cycling Tongkat Ali
Huberman has said he never felt the need to cycle Tongkat Ali.
He has said he found the supplement beneficial for increasing his free testosterone and libido through regular use.
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Huberman Tongkat Ali Experience
Huberman has said he’s been taking Tongkat Ali for years and has found the effects subtle but consistent.
FAQ
Does Andrew Huberman take Tongkat Ali?
Yes, he typically takes 400mg of Tongkat Ali daily, usually early in the day, due to the supplement’s stimulant effect.
What does Huberman say about Tongkat Ali?
Huberman has been taking Tongkat Ali for years and has stated that he enjoys the effects that are subtle but consistent.
What does Huberman recommend for testosterone?
For optimizing testosterone, Huberman recommends Tongkat Ali, vitamin D, boron, and fadogia agrestis. Additionally, he suggests getting quality sleep and following a regular exercise routine.
What are the benefits of Tongkat Ali Huberman?
Some of the benefits that Huberman has mentioned include an increase in free testosterone, improved sperm quality, and a subtle stimulating effect.
What is Tongkat Ali recommended by Andrew Huberman?
Huberman is partnered with Momentous which offers a Tongkat Ali supplement that is 100% root powder sourced from Indonesia.