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Hormone Support

Tongkat Ali (Longjack)

Also known as: Eurycoma longifolia, Longjack, Malaysian ginseng, Pasak bumi

B
Evidence

A Southeast Asian herb traditionally used to support testosterone levels and male vitality. Recent clinical evidence suggests it may modestly improve testosterone, muscle strength, and sexual function in men.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

  • Testosterone support
  • Libido
  • SHBG reduction
  • Stress
  • Male sexual function
  • Muscle strength and recovery
  • Energy and vitality

How it works

  • May increase free testosterone
  • Reduces SHBG binding
  • Cortisol reduction

Dosage

Typical range
200-400mg standardized extract
Timing
Morning
With food
Either
Duration
4+ weeks for effects
Special populations
Men with low testosterone, stress

Forms

  • Capsule
  • Powder
  • Standardized extract· 70/100

Safety

Common side effects

  • Insomnia
  • Irritability
  • Restlessness

Contraindications

  • Hormone-sensitive cancers
  • Heart conditions

Products containing Tongkat Ali (Longjack)

Top-scoring supplements in our catalog that list Tongkat Ali (Longjack) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

Transparent Labs
Tongkat Ali
91
Nootropics Depot
Eurycomax Capsules
86
Nootropics Depot
Tongkat Ali Extract Capsules or Tablets
80
See all products →

Evidence notes

Multiple studies showing testosterone and fertility benefits

Grade B: Some human trials support key claims; further confirmation needed.

Tongkat Ali (Longjack) compared head-to-head

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.