Relative Addictiveness of
Various Substances

In Health, Nov/Dec 1990

To rank today's commonly used drugs by their addictiveness, we asked experts to consider two questions: How easy is it to get hooked on these substances and how hard is it to stop using them? Although a person's vulnerability to drug also depends on individual traits -- physiology, psychology, and social and economic pressures -- these rankings reflect only the addictive potential inherent in the drug. The numbers below are relative rankings, based on the experts' scores for each substance:

100Nicotine
99Ice, Glass (Methamphetamine smoked)
98Crack
93Crystal Meth (Methamphetamine injected)
85Valium (Diazepam)
83Quaalude (Methaqualone)
82Seconal (Secobarbital)
81Alcohol
80Heroin
78Crank (Amphetamine taken nasally)
72Cocaine
68Caffeine
57PCP (Phencyclidine)
21Marijuana
20Ecstasy (MDMA)
18Psilocybin Mushrooms
18LSD
18Mescaline

Research by John Hastings

Relative rankings are definite, numbers given are (+/-)1%










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Page last updated on January 04, 2014 by John R. Polito