Quaalude is a brand name for the depressant methaqualone (me-THA-kwa-lone) and is no longer manufactured commercially. The drug is a central nervous system depressant similar to barbituates. The effect on the body is a reduction in the heart and breathing rate and blood pressure. Small doses create a feeling of euphoria. Larger doses can bring about depression, irrational behavior, poor reflexes and slurred speech. Those who use quaaludes frequently develop tolerance rather quickly.

Regards

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Note added at 2002-02-04 19:48:45 (GMT)
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Perdona la confusión de responderte antes en ingles, :) Lo cierto es que en la anterior pregunta lo he hecho alreves :P