[1][2] Uvaria siamensis is a shrub or liana native to Myanmar, Laos, Thailand, Cambodia, Vietnam, and northern Peninsular Malaysia.

Uvaria siamensis a perennial plant with a small trunk, and a height of 1–2 meters, darkly-coloured stalks and drooping branches.

A single one can bloom as group of 1–3 flowers, which are yellow-green in color, 1–2 cm large, very fragrant, and have 6 petals.

It is an essential ingredient in an Indonesian herbal concoction which includes, besides nom-maew, ginseng root and powdered corn.

It has a pleasant taste and aroma, and claims to have a variety of benefits including: improving muscle one, expands circulation, reduces blood pressure, restores a regular heart rhythm, increases red blood cell count, reduces pain and fatigue, cleanses the body of toxic substances and stimulates intellectual activity.