Eurycoma longifolia
Eurycoma longifolia Jack
Eurycoma longifolia (commonly called tongkat ali, Malaysian ginseng or long jack) is a flowering plant in the family Simaroubaceae.
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Eurycoma longifoliaEurycoma longifolia
Eurycoma longifolia
Eurycoma longifolia
Eurycoma longifolia
Eurycoma longifolia
Eurycoma longifoliaEurycoma longifoliaEurycoma longifoliaOverview
Eurycoma longifolia (commonly called tongkat ali, Malaysian ginseng or long jack) is a flowering plant in the family Simaroubaceae. It is native to Indochina (Cambodia, Laos, Malaysia, Myanmar, Thailand and Vietnam) and Indonesia (the islands of Borneo and Sumatra), but has also been found in the Philippines. The plant is a medium-sized slender shrub that can reach 10 m (33 ft) in height, and is often unbranched.
Updated by lebachungtdh@gmail.com · 10/15/2026
The root has been used in traditional medicine in Southeast Asia over centuries. It is also a widely used dietary supplement by bodybuilders, who believe that it increases testosterone levels and athletic performance, although there is no clinical evidence for its effectiveness on health or any disease. Rare cases of liver injury have occurred from its use, mostly in bodybuilders.
Updated by lebachungtdh@gmail.com · 10/15/2026
此外也有生理上相似，不同品种，较深色，多幼根的称为Tongkat Ali Hitam，学名Polyalthia Bullata。印度尼西亚也有红色品种，称为Pasak Bumi Merah，这两种品种有甘甜味，苦味少，医疗实力不能够确定。
Updated by lebachungtdh@gmail.com · 10/15/2026
Life cycle
From seed to productSeed & germination
The plant is propagated mainly by **seed**: sow fresh or pre-treated seed in loose, moist soil and keep it evenly damp; germination follows within a few weeks.
Seedling & growth
Seedlings establish, forming leaves and roots; growth rate depends on light and moisture.
Flowering
The plant blooms with **small reddish-brown flowers, June–July**; pollination is by insects and wind.
Fruiting & harvest
After flowering the plant sets fruit and seed; **roots dug after 4–5 years**.
Uses
- The root has been used in traditional medicine in Southeast Asia over centuries.
- It is also a widely used dietary supplement by bodybuilders, who believe that it increases testosterone levels and athletic performance, although there is no clinical evidence for its effectiveness on health or any disease.
- Rare cases of liver injury have occurred from its use, mostly in bodybuilders.
Habitat & conservation
It is native to Indochina (Cambodia, Laos, Malaysia, Myanmar, Thailand and Vietnam) and Indonesia (the islands of Borneo and Sumatra), but has also been found in the Philippines.
Conservation
Eurycoma longifolia has not been assessed by the IUCN Red List (NE). As a medicinal plant, it benefits from sustainable collection and propagation to protect wild genetic resources.
References
- 1Wikipedia – Eurycoma longifolia — Wikipedia,
- 2Kew POWO – Eurycoma longifolia — Plants of the World Online (Kew),
- 3Wikidata – Q311710 — Wikidata,