Amphetamine: it is a powerful stimulant of the central nervous system that leads to a feeling of energy and power beyond measure (increases heart rate, blood pressure, suppresses the sense of hunger, etc.).
Cocaine: is a local anesthetic and a central nervous system stimulant that can lead to fever, apathy, difficulty breathing and loss of consciousness when taken in large quantities.
Marijuana: is a hallucinogenic agent resulting from the flowering of the hemp plant (Cannabis sativa). After taking Marijuana, chemical compounds such as tetrahydrocannabinol (THC) are detected in the urine. Marijuana use can cause: impaired sensory perception, impaired short-term memory, paranoid attacks, anxiety, depression and confusion.
Methadone: is an analgesic narcotic prescribed for the treatment of pain and for the treatment of opiate addiction, it provides pain relief for a long time.
Methamphetamine: chemically it is very similar to amphetamine, but produces heavier effects on the central nervous system. Acute and large doses lead to high stimulation of the central nervous system inducing euphoria, alertness, reduced appetite and a sense of high energy and power.
Morphine: is an opiate that acts on the perception of pain, affecting the central nervous system; it is used in medicine as an analgesic for the treatment of acute and chronic pain. High doses of Morphine lead to high levels of tolerance and addiction, physiological dependence and abuse by consumers.