Drug harmfulness is the degree to which a psychoactive drug is harmful to a user. Drug harmfulness is measured in various ways, such as by addictiveness and the potential for physical harm. More harmful drugs are called hard drugs and less harmful drugs are called soft drugs. The term "soft drug" is considered controversial by its critics as it may imply that soft drugs causes no or insignificant harm.
The distinction between soft drugs and hard drugs is important in the drug policy of the Netherlands, where cannabis production, retailing and use come under official tolerance, subject to certain conditions. The Dutch Opium Law contains two lists of drugs, List I and List II, that are colloquially considered to be lists of hard and soft drugs, respectively. Other countries typically have more than two categories. For example, the US has five schedules in the Controlled Substances Act, ranging from one through five. The UK has three classes in the Misuse of Drugs Act 1971: A, B and C.
- Effective dose (pharmacology)
- Drug policy of the Netherlands
- Designer drug
- The Rhetoric of Drugs
- Nutt, D.; King, L. A.; Saulsbury, W.; Blakemore, C. (2007). "Development of a rational scale to assess the harm of drugs of potential misuse". The Lancet 369 (9566): 1047–1053. doi:10.1016/S0140-6736(07)60464-4. PMID 17382831.
- Thomas Nordegren (2002). The A-Z Encyclopedia of Alcohol and Drug Abuse. Parkland, Fla.: Brown Walker Press. p. 327. ISBN 1-58112-404-X.
- Thomas Nordegren (2002). The A-Z Encyclopedia of Alcohol and Drug Abuse. Parkland, Fla.: Brown Walker Press. p. 597. ISBN 1-58112-404-X.