International Opium Convention

1925

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June 29, 2026

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The International Opium Convention of 1925, signed in Geneva, was a significant step in global drug control. Building upon earlier efforts, this convention, sponsored by the League of Nations, aimed to further restrict the production and manufacture of narcotics. A key development was the inclusion of cannabis, or \"Indian hemp,\" under international control, limiting its use strictly to scientific and medical purposes. This treaty marked the first multilateral agreement specifically addressing cannabis, alongside other narcotics derived from opium. The convention placed further restrictions on the international trade of these substances, reflecting a growing global concern over drug use and abuse.123

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marijuana
Legality
…placed under controls during the International Opium Convention of 1925. By the late 1960s most countries had enforced restrictions on trafficking and using marijuana and hashish and had imposed generally severe penalties for their illegal possession, sale, or supply. Beginning in the 1970s, some countries and jurisdictions reduced the penalty…
Read More
…placed under controls during the International Opium Convention of 1925. By the late 1960s most countries had enforced restrictions on trafficking and using marijuana and hashish and had imposed generally severe penalties for their illegal possession, sale, or supply. Beginning in the 1970s, some countries and jurisdictions reduced the penalty…
Read More