Amphetamines are sympathomimetic amines that cause rapid release of:

Explanations

• Amphetamines pass readily into the CNS and cause a rapid release of norepinephrine in
  the brain. Amphetamines increase systolic and diastolic blood pressures and act as weak
  bronchodilators and respiratory stimulants. They have a high potential for abuse, resulting
  in tolerance, psychological dependence, and severe social disability. Abuse causes extreme
  violence and paranoid psychotic behavior Note: Amphetamines and ephedrine are
  indirectly acting sympathomimetic (sympathetic-type) drugs. These drugs demonstrate
  tolerance and are orally active, unlike epinephrine and norepinephrine.

  — oneguy