Some drugs, including marijuana and cocaine, can make symptoms worse.

A scarred heart can be caused by many factors, including cocaine and other drugs.

It was then sent to a lab and tested for about 15 drugs, including cocaine.

Until Wednesday, the union had always resisted testing for any drugs, including steroids and cocaine.

Heavy pot usage eventually gave way to harder drugs including cocaine.

He has admitted to taking other drugs including cocaine and ecstasy in the past.

Similar impairments have been found in research into other addictions including alcohol and cocaine.

Nor do most other drugs, including cocaine, alcohol and nicotine, all of which are being increasingly rejected.

Houston did, however, admit to using other substances at times, including cocaine.

She also admits to a history of abusing other substances, including cocaine.