For more information on tongkat ali, please check the following websites:

Tongkat Ali (eurycoma longifolia jack) is one of Asia's most precious plants

Genetic Diversity of Tongkat Ali / Eurycoma longifolia

Tongkat ali (eurycoma longifolia jack) from a genuine wholesale company at discount prices (online orders)

Effects of Eurycoma longifolia Jack (Tongkat Ali) and sexual performance

Eurycoma longifolia Jack (tongkat ali) and libido

Asian impotence research, with reference to tongkat ali

Tongkat ali (eurycoma longifolia jack) with biological information and uses to increase testosterone

Bioresearch for Eurycoma longifolia (tongkat ali)

Tongkat Ali has meanwhile been declared a protected plant in Malaysia

Tongkat ali grows on sandy soils below 1200m, in primary and secondary mixed dipterocarp, kerangas and sub-montance forests.

If you want, you can participate in a clinical study on tongkat ali (pasak bumi in Indonesian)

Evaluation of the potency of aphrodisiac in Eurycoma longifolia Jack

Eurycoma longifolia Jack (tongkat ali) enhances (in the animal model) sexual motivation

Professor Ang is one of the foremost scientists involved in the research on tongkat ali.

The Massachusetts Institute of Technology (MIT) is involved in Tongkat Ali research

Tongkat Ali (eurycoma longifolia) in food products from Malaysia