The Library · Vol. 01Entry No. 73· Chapter 08

Longjack (Tongkat Ali)

Eurycoma longifolia

Also known as Tongkat Ali or Malaysian Ginseng, this root has been used for centuries in Southeast Asian traditional medicine as a powerful male tonic.

2
Active compounds
2
In our products
08
Vitality & Libido
Longjack (Tongkat Ali) (Eurycoma longifolia)

Eurycoma longifoliaBotanical illustration

§ 1The molecules

Active compounds.

2 compounds · 5 statements

No.01

Eurycomanone

Why this matters

  • № 01Supports free testosterone levels*
  • № 02Promotes healthy cortisol balance*
  • № 03Supports energy and vitality*
No.02

Quassinoids

Why this matters

  • № 01Supports athletic performance*
  • № 02Promotes lean muscle maintenance*

*These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.

§ 3Where it lives

Find Longjack (Tongkat Ali) in

2 products

Alpha Energy
Alpha Energy
50 mgBelow cycling threshold
$19.42$25.90
Stamina Herbal Complex
Stamina Herbal Complex
50 mgBelow cycling threshold
$15.67$20.90
From the Library · Vol. 01

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you're taking.

Every compound in your stack — sourced, dosed, and cited. No proprietary blends. Browse the science behind the bottles.

118Ingredients
180Compounds
14Chapters
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A cross-section of the library — six chapters in view, plus eight more inside.Showing 12 · Browse all 118 →
Lion's Mane Mushroom
№ 01 · CH.01

Lion's Mane Mushroom

Hericium erinaceus

A distinctive white, shaggy mushroom used for centuries in traditional Chinese medicine.

HericenonesErinacinesβ-(1→3)(1→6)-glucan
Reishi Mushroom
№ 02 · CH.01

Reishi Mushroom

Ganoderma lucidum

Known as the 'mushroom of immortality' in traditional Chinese medicine, Reishi has been used for over 2,000 years to support longevity and overall wellness.

Ganoderic acidsβ-(1→3)(1→6)-glucanPolysaccharides
Ashwagandha
№ 11 · CH.02

Ashwagandha

Withania somnifera

One of the most important herbs in Ayurvedic medicine, used for over 3,000 years.

WithanolidesWithaferin ASitoindosides
Rhodiola Rosea
№ 12 · CH.02

Rhodiola Rosea

Rhodiola rosea

A powerful adaptogen that grows in cold, mountainous regions of Europe and Asia.

RosavinsSalidroside
Bacopa
№ 17 · CH.03

Bacopa

Bacopa monnieri

An ancient Ayurvedic herb known as 'Brahmi', used for thousands of years to enhance memory and learning.

Bacosides
Chinese Club Moss
№ 18 · CH.03

Chinese Club Moss

Huperzia serrata

A primitive, slow-growing moss native to mountain forests of China and Southeast Asia, used in Traditional Chinese Medicine for centuries.

Huperzine A
Bee Bread
№ 19 · CH.04

Bee Bread

Fermented Bee Pollen

Bee bread is pollen that has been fermented by bees using honey and their own enzymes.

Digestive EnzymesAmino Acids
Royal Jelly
№ 20 · CH.04

Royal Jelly

Apis mellifera secretion

The exclusive food of queen bees, who live 40x longer than worker bees.

10-Hydroxy-2-decenoic acidRoyalactin
Valerian Root
№ 22 · CH.05

Valerian Root

Valeriana officinalis

A flowering plant native to Europe and Asia, Valerian has been used since ancient Greece and Rome to promote relaxation and restful sleep.

Valerenic AcidIsovaleric Acid
Lavender
№ 23 · CH.05

Lavender

Lavandula angustifolia

A fragrant herb used for thousands of years to promote relaxation and sleep.

LinaloolLinalyl Acetate
Horsetail Extract
№ 30 · CH.06

Horsetail Extract

Equisetum arvense

An ancient plant dating back to prehistoric times, Horsetail is one of the richest natural sources of silica.

Silicon Dioxide
Fo-Ti
№ 31 · CH.06

Fo-Ti

Polygonum multiflorum

A revered herb in Traditional Chinese Medicine, known as 'He Shou Wu' meaning 'black-haired Mr.

StilbenesAnthraquinones

We publish every dose, every source, every paper we leaned on. An informed customer is our only kind.

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From the Journal

Keep reading.

Journal · eurycomanone
Mar 17, 2026

Tongkat Ali: Upstream Hormonal Support Without Exogenous Hormones

Tongkat Ali doesn't supply testosterone, contain precursors, or directly stimulate synthesis. It works upstream — modulating SHBG binding and LH signaling to increase how much of your existing testosterone is actually bioavailable. This distinction matters: it's the difference between overriding the body's regulatory architecture and working within it. For professionals under chronic stress — the exact conditions that suppress the HPG axis — the correction is meaningful and difficult to achieve through lifestyle alone.

Read article→

— End of entry

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