Single doses can impair cognitive functioning, learning motivation and motor abilities. Very large doses can cause confusion, restlessness, hallucinations and panic reactions. Possible depression of the immune system, chromosome damage, reduced sperm count in males. Rapid swings in mood and unpredictable changes in emotions and sensations. Possible flashbacks some time after use.
Larger doses cause slurred speech, slowed reactions and excessive sleep.
Large doses or doses with alcohol or other sedative hypnotics can result in respiratory depression and death. High potential for abuse. Written prescriptions required, and no refill allowed. Increased blood pressure, heart rate, body temperature, respiration, sweating. Linked to cardiovascular problems and convulsions, which can be lethal.