The leaves of Java coca contain as much as 2.5% alkaloids totally.
About 10-20% of these alkaloids is the cocaine, and the other alkaloids
are (among the others) the cinnamylcocaine and tropacocaine alkaloids.
The leaves also contain sterol, resin, pigment and essential oils, one
of which is the methyl salicylate. The leaves were used as a local anesthetic
and as a tonic for digestive and nerve systems. It must be used only under
the doctor's supervision, as it is potential to cause addiction. The cocaine-free
leaves were also used in the production of some popular softdrinks (such
as the Coca-Cola).
The best pruning is as low as 50 cm tall from the ground. The harvesting
can be performed once for every three months to get the production increase
of 1.36 tons of fresh leaves per ha per year, or as much as 53.5 % increase
of production, compared to the result of monthly harvesting.