Worsening of preexisting emotional disorders. Hostility, chronic fatigue from sleep disturbance or insomnia. Slurred speech, limited motor coordination. Changes in eyesight. Vertigo, impotence, reduced sex drive, irregular menstruation, breathing disorders.
Craving continues after pleasurable effects disappear and drug use is stopped.
Effects are individual to each user. Psychic and physical reactions are not predictable. Depression can be mild or severe. Psychosis can last for months. Flashbacks can recur anytime.