10 Most Addictive Drugs In the World

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T2. Nicotine

Dependence Rating: 2.82

This is another legal drug which has been recognized as one of the most addictive drugs in the world. Nicotine increases levels of dopamine in the system, and creates new brain receptors, inhibiting the production of vitally needed neurochemicals. According to the National Institute on Drug Abuse, nicotine has an 85% relapse rate.

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