The nut of the Areca palm tree and an ingredient of betel nut quid, an addictive mix chewed in some Pacific and Asian cultures. Its use is associated with aggressive oral cancers affecting especially the inner lining of the cheeks and lips are the primary tumor sites. Other sites include the tongue, lower lip, tonsil and floor of the mouth.

Betelnut is a stimulator. The active substance, arecoline, has a stimulating effect on the central nervous system, it improves learning and thinking capacities, it enhances the breathing, benefits your mood and reduces the strain on the heart. It gives a euphoric feeling and has aphrodisiac qualities. The chewing of betel gives a cheerful relaxation and a nice feeling in the mouth that rises up to the brains. This makes it an enjoyable pastime.