"It doesn't seem to happen with cocaine or heroin because we don't produce heroin and cocaine in this country," he said.

Methylecgonidine could also theoretically be used to produce cocaine and so may be a controlled substance in some countries.

The Bolivian government, in response to international pressure, has worked to restrict coca cultivation for the use of producing cocaine.

It doesn't produce or consume much cocaine, but West Africa has become a critical hub for traffickers.

It does not cost much to produce cocaine and heroin.

In recent decades, the Chapare province has become a haven for illegal cultivation of the coca plant, which can be used to produce cocaine.

Much of the coca, used to produce cocaine, has been destroyed here in an American-funded eradication drive.

Mexican officials said the chemical, methylamine, could be used to make the synthetic drug methamphetamine, and also to produce cocaine.

They just produce cocaine in South America and smuggle it into the United States.

Yes, the same coca leaf that produces cocaine.