Relaxation, peacefulness, sleepiness, pleasurable intoxication, dizziness, inactivity, withdrawal, interrupted thought process, mood swing, excitement, increased pain, hostility, depression, anxiety, confusion, changed vision, increased sex drive, intense emotions, hangover. Nausea, vomiting, abdominal pain. Alternate pupil constriction and dilation. Loss of reflex response. Low body temperature and blood temperature.
Effects cause ever increasing depression of respiratory control centers of the brain.
Tolerance leads to increased doses, risk of life-threatening complications, and severe withdrawal symptoms. Anxiety, restlessness, depression. Impaired memory, judgment and thinking. Worsening of preexisting emotional disorders. Hostility, chronic fatigue from sleep disturbance or insomnia.