Continued high doses cause heart problems. Malnutrition, and death B. Cocaine or Crack rapidly produces addiction and causes confusion, depression, and hallucinations. Effects are unpredictable-convulsions. Coma, cardiac arrest and death are possible. Nasal membranes may be destroyed.
Smoking causes lesions in the lung.
Brain damage may occur. V. Depressants Depressants relax the central nervous system. Tolerance, physical and psychological dependence develops. Overdoses cause coma and death. Depressants taken 'n combination or with alcohol are especially dangerous due to their combined effects.