Tongkat Ali (Eurycoma longifolia): Leaf and Root Phytochemistry

By tongkatali.org
Updated January 7, 2026

Historically, Tongkat Ali leaf extracts have been produced alongside root extracts, although leaf material has been studied less frequently.

Compared to roots, leaves hold 20-fold eurycomanone. Leaves contain more than 6 mcg eurycomanone per mL, roots just 0.3 mcg per mL.
https://journals.utm.my/jurnalteknologi/article/view/6011

Higher eurycomanone in Tongkat Ali leaves

Eurycomanone has been discussed in the literature as one of several compounds present in Eurycoma longifolia.

https://pubmed.ncbi.nlm.nih.gov/23810842/

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