INTRODUCTION

LongJack (Tongkat Ali) is known as Malaysia national treasure, a native therapeutic herb that is highly valued by international pharmaceutical industry, and sells well in worldwide. In Malay, Tongkat means staff or walking stick, in reference to its effects on male vitality. Meanwhile, Tongkat Ali is also been called "Natural Aphrodisiac" by locals, or "Malaysia Ginseng" as it contains five times more flavone than ginseng. In Vietnam, Tongkat Ali is been called "Herbs that cure all diseases".

Tongkat Ali is a kind of wild shrub that grown in moist sandy soil of virgin tropical rainforest, in Southeast Asia near the equator, which its maturity is normally more than 5 years. Its height can be 4-6 meters or even up to 12 meters, trunk diameter of 8-10 cm or at most 15cm. It is often unbranched with umbrella-shaped leaves on top. Its root has no bifurcation, yet can grow deepest 2 meters underground. Roots of Tongkat Ali have various effects, known as Malaysia National Treasure together with edible bird's nest and pewter. According to studies, roots of Tongkat Ali (especially its core) contain various phytochemicals drugs that are able to enhance the production of testosterone, which allows supporting of hormone levels for reproductive organs and brain developments, and also promote healthy libido in males.