In California no one is allowed to possess any controlled substance like a narcotic drug, hallucinogen or a stimulant, as defined by the California Codes, unless it is prescribed by licensed physician. Drugs like Cocaine, Heroine, Methamphetamines, Ecstasy, Crack, and even Marijuana (except pursuant to California Health & Safety Code 11362.7 et al.), as well as others, are strictly forbidden. Likewise, prescription drugs like Vicodin and Oxycodone, are also not allowed unless the person in possession also has a valid prescription from a medical doctor. Most drug offenses in the State of California are now felonies.

Likewise, no one is allowed to possess for sale any controlled substance like a narcotic drug, hallucinogen or a stimulant, as defined by the California Codes. Whether the possession is for sale or for personal use is determined by looking at many factors, such as the amount of the substance, the way it was packaged, whether any scales, pay/owe sheets, ledgers, notes, or communication devises were also found and are associated with the controlled substance. If a person is found to be carrying or driving with these substances, he or she may be charged with transportation or trafficking of a controlled substance.