In the following chart, be aware that the major effects, symptoms of overdose, possible effects of withdrawal, and acute and chronic effects are only potential characteristics of the noted drugs; moreover, the characteristics may not in fact apply to all drugs within the corresponding drug category.

• cocaine (“coke,” “blow,” “toot,” “snow”)
• smokeable forms of cocaine (“crack,” “rock,” “base”)
• amphetamines (Benzedrine [“crosstops,” “black beauties”], Methedrine [“crank,” “meth,” “crystal”], Dexedrine)
• nonamphetamine stimulants (Ritalin, Cylert, Preludin)
• caffeine (in coffees, teas, colas, chocolate, No Doz, Alert, Vivarin)
• phenylpropanolamine (in Dexatrim)
• nicotine (in tobacco)

• psychomotor stimulation
• alertness
• elevation of mood
• increase in heart rate
• increase in blood pressure
• suppression of appetite

• tremors
• sweating and flushing
• rapid heartbeat
• anxiety
• insomnia
• paranoia
• convulsions
• heart attack
• stroke

Caffeine:
• chronic headache
• irritability
• restlessness
• anxiety

Cocaine and amphetamines
• intense drug craving
• irritability
• depression
• anxiety
• lethargy
• suicidal ideation and attempts:

Acute:
• heart attacks
• strokes
• seizures
• respiratory
• depression

Chronic:
• strokes
• cardiovascular problems
• depression
• suicide
• paranoidschizophrenia
• perforation of the nasal septum
• malnourishment