A drug policy is the policy regarding the control and regulation of psychoactive substances (commonly referred to as drugs), particularly those that are addictive or cause physical and mental dependence. While drug policies are generally implemented by governments, entities at all levels (from international organisations, national or local government, administrations, or public places) may have specific policies related to drugs.
Drug policies are usually aimed at combatting drug addiction or dependence addressing both demand and supply of drugs, as well as mitigating the harm of drug use, and providing medical assistance and treatment. Demand reduction measures include voluntary treatment, rehabilitation, substitution therapy, overdose management, alternatives to incarceration for drug related minor offenses, medical prescription of drugs, awareness campaigns, community social services, and support for families. Supply side reduction involves measures such as enacting foreign policy aimed at eradicating the international cultivation of plants used to make drugs and interception of drug trafficking, fines for drug offenses, incarceration for persons convicted for drug offenses. Policies that help mitigate the dangers of drug use include needle syringe programs, drug substitution programs, and free facilities for testing a drug's purity.
The concept of "drugs" –a substance subject to control– varies from jurisdiction to jurisdiction. For example, heroin is regulated almost everywhere; substances such as khat, codeine, or alcohol are regulated in some places,[1] but not others. Most jurisdictions also regulate prescription drugs, medicinal drugs not considered dangerous but that can only be supplied to holders of a medical prescription, and sometimes drugs available without prescription but only from an approved supplier such as a pharmacy, but this is not usually described as a "drug policy". There are however some international standards as to which substances are under certain controls, in particular via the three international drug control conventions.