College Park Health Risks Associated with Drug Use Narcotics Drugs included in this classification include opium, morphine, codeine, methadone and other opium derivatives and synthetics.
Narcotics are the most physically addictive drugs.
The first or second administration of narcotics results in a tremendous euphoric feeling that cannot be repeated due to the rapid development of tolerance to the drug. This leaves the user with high cravings and low benefits from continued drug use. The user must continue ingesting the drug in order not to develop withdrawal symptoms. A major physical risk associated with the use of narcotics is sudden death resulting from respiratory arrest. Other risks include infection due to IV drug use.