Nicknames:
Rock, freebase

Effects:
Pupil dilation
Elevated blood pressure
Increased respiratory rate
Increased risk of exposure to HIV, hepatitis, and other infectious diseases if injected
Paranoia
Seizures
Heart attack
Respiratory failure
Constricted peripheral blood vessels
Restlessness, irritability, anxiety Loss of appetite
Tactile hallucinations Insomnia Increased body temperature
Death from overdose