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Not medical advice. The Atlas is not a substitute for a clinician who can examine you.

LJ100 (Tongkat Ali)

HP Ingredients, patented eurycoma extract

Evidence grade 3 of 5, Mixed. Read how the Atlas grades evidence.

The written rationale for this grade is still being prepared.

FDA
Dietary ingredient (not FDA-evaluated for efficacy)

Reference only. Not medical advice.

What can go wrong

Effects are modest and strongest in stressed/older/low-T men; less in healthy young men. Tongkat ali supplements have had heavy-metal and adulteration concerns when not from standardized suppliers.

This is something to take to a clinician. The Atlas can tell you what is known about lj100 (tongkat ali) in general. It cannot tell you what is happening in your body, and the difference matters most for exactly the symptoms that bring people to this page.

LJ100 is a patented Eurycoma longifolia (Tongkat Ali) extract from HP Ingredients, standardized to ~40% glycosaponins, ~22% eurypeptides, and ~1.6% eurycomanone, with technology originally licensed from MIT and Malaysian government research. Tongkat ali is the one ingredient in this category with reasonable human RCT support: it works largely by lowering SHBG to raise free testosterone, with the clearest effects in stressed, older, or low-baseline men.

The patented, MIT-linked Tongkat Ali standardized for its active peptides.

What people take it for

These are the reasons people give for taking it. They are not effects it has been shown to have.

  • Free testosterone support; stress; libido

What people get wrong

  • Often saidTongkat ali skyrockets testosterone

    ActuallyA 2022 meta-analysis of RCTs found a statistically significant but modest increase in total testosterone, concentrated in lower-baseline men, meaningful, not dramatic.

Who profits, and who pushes back

Nobody is named here yet, because we have not done that work on this entry. Read that as unfinished. Somebody almost certainly sells this, and somebody almost certainly disputes it. Assume both until we have checked.

At a glance

Supplier
HP Ingredients
Standardization
40% glycosaponins, 22% eurypeptides, 1.6% eurycomanone
Mechanism
Lowers SHBG -> more free testosterone

What this entry does not yet cover

What follows is unfinished work on our side, not a finding about LJ100 (Tongkat Ali). A short entry is not a safe entry.

  • Timeline. We have not built the dated record of research and regulatory events.
  • Cost and market. We have not documented what it sells for or who sells it.
  • Supply chain. We have not mapped where it is made.
  • Who uses it. We have not documented the user groups.
  • What could change. No forward-looking summary yet.
  • How it compares. We have not set it against the alternatives.
  • Children and teenagers. We have not checked what is known about younger people.
  • Where we land. We have not taken a position on this yet.

Sources

The studies below are named and described, but not linked. You cannot open them from here and check our reading against them, which means this page is our summary of the literature rather than a document you can verify. Weigh it accordingly until the links exist.

The studies that matter

  • Tongkat ali meta-analysis2022

    Pooled RCTs showed significant total-testosterone increase vs placebo, strongest in stressed/older/low-T men