BETEL NUT (H. S. Code- 21069030): Areca is a plant. The nut is used to make medicine. Areca nut is chewed alone or in the form of quid’s, a mixture of tobacco, powdered or sliced areca nut, and slaked lime wrapped in the leaf of “betel” vine (Piper betel).
Areca is used for treatment of a mental disorder called 
schizophrenia and an eye disorder called glaucoma; as a mild stimulant; and as a digestive aid.
Some people use areca as a recreational drug because it speeds up the central 
nervous system (CNS).
In veterinary medicine, an extract of areca is used for expelling 
tapeworms in cattle, dogs, and horses; to empty animals’ bowels; and for treating intestinal colic in horses.