Tongkat ali explained: what it is and where it grows

The NIH describes tongkat ali as a flowering evergreen tree native to Southeast Asia, also called Eurycoma longifolia and Long Jack. Its extracts can come from the tree's roots. Two products we reviewed list tongkat ali, and two labels print its amount, from 33.3 mg to 200 mg per serving.

What it is
Plant
Amounts the NIH names
Traditional medicine typically uses 100 to 400 mg daily.
In the products we reviewed
2, every label prints the amount

What tongkat ali is

  • Tongkat ali extracts can come from the tree's roots.1
  • Tongkat ali is a flowering evergreen tree native to Southeast Asia.1
  • Tongkat ali is also called Eurycoma longifolia and Long Jack.1
  • Tongkat ali is sold as raw powders, tea or coffee blends, and capsules, alone or combined with other supplements.1
  • Tongkat ali extracts contain more than 65 identified compounds, including tannins and several other groups of plant chemicals.1

How much tongkat ali each product gives

Per serving, as each label prints it, against the amounts the NIH names

NIH: 100 mg to 400 mg per dose

Horse Peak Gelatin200 mg
ErecPrime33.3 mg

Before you take it

Side effects

  • Side effects at conventional doses are uncommon but can include nausea, abdominal discomfort, diarrhea, headaches, and rash.1

Ask a doctor first

  • The long-term safety of tongkat ali has not been well documented in humans.1

These statements have not been evaluated by the FDA. A supplement is not a medicine.

The 2 products we reviewed that list tongkat ali

ProductForm and servingTongkat ali per servingOur scorePrice a bottleBuy
Horse Peak Gelatin#4 in men's health supportGummies1 gummy200 mg9.2$49Check price
ErecPrime#7 in men's health supportCapsules2 capsules33.3 mg8.7$49Check price
Prices checked Oct 11, 2026

Questions people ask

What is the tongkat ali plant?

Tongkat ali is a flowering evergreen tree native to Southeast Asia, according to the NIH. Its extracts can come from the tree's roots and contain more than 65 identified compounds, including tannins.

Is tongkat ali safe, and what are its side effects?

Tongkat ali's long-term safety has not been well documented in humans. Side effects at conventional doses are uncommon but can include nausea, abdominal discomfort, diarrhea, headaches and rash. Ask a clinician before starting.

How much tongkat ali is taken per day?

100 to 400 mg daily is the range the NIH names for traditional use of tongkat ali. Long-term safety in humans has not been well documented, so ask a clinician before starting.

Which tongkat ali supplements did we review, and how much do they contain?

Horse Peak Gelatin and ErecPrime both list tongkat ali and print its amount per serving. Horse Peak Gelatin lists 200 mg per gummy, and ErecPrime lists 33.3 mg per 2 capsules.

Sources

The products, amounts and prices come from each product's label and checkout, as its review shows them. AI drafts our pages from listed sources, figures are checked against them, and we have not tried the products.

  1. 1NIH LiverTox, Tongkat Alincbi.nlm.nih.gov/bookschecked