If the history of Cannabis and humankind was a day, prohibition would only be its last 30 seconds.
From time immemorial Cannabis has grown, been grown, and used for countless purposes. Worldwide, Cannabis provided clothing, food, feed and bedding for livestock, medicine, and a spiritual and social enhancer. But things changed brutally, only a hundred years ago.
The modern prohibition of Cannabis sativa L. plant (also known as hemp, marihuana, भांग, dagga, конопля, ganja, 麻, pot, ntsangu, haschisch, canapa, riamba, قنب, siddhi, kif, cáñamo, bangui, 大麻, chanvre, konopí…) originated before 1925 in Brazil, Egypt, and South Africa. The USA came much, much later.
But it was only in 1925 that Cannabis acquired a marked world character that continues to this day, as it entered international law for the first time.


Photos taken at the Palais des Nations (UN, Geneva) on the day of the Centenary: 19 February 2025.
1925 marks the birth of international treaty control over Cannabis/hemp
In 1925 (29 September), the Brussels Pharmacopoeia Treaty included for the first time Cannabis (herb, extract, tincture) in the International Pharmacopoeia, alongside other important medicines.
In 1925 also (19 February), the Geneva Opium Convention included “Indian hemp,” upon request from Egypt. For the first time, Cannabis had become an internationally-controlled drug. The conservative Brazilian, Egyptian, and South African governments had managed to extend to the entire planet their racist, colonially-biased, and intolerant views of an ancestral plant. The 1925 Opium Convention generated a descendance of treaties that continue to be in force worldwide today (like the Single Convention on Narcotic Drugs of 1961).

Celebrate the diverse Cannabis heritage and cultures
Condemn the devastation of a 100 years of prohibition
2025 Centenary of Cannabis Prohibition–Global Cannabis History Year
A global collective catharsis, looking back at 100 years of negative history –since the 1925 Geneva Opium Convention first brought “Indian hemp” under international drug control. Meanwhile, cannabis also entered the International Pharmacopea in the same year.
Let’s re-examine this dual history in light of the millenia of positive interactions with Cannabis sativa L. by all human societies. During 99% of human history cannabis was neither prohibited nor problematic. We will do it again!
Cannabis Embassy – Legatio Cannabis – 大麻大使馆 – سفارة القنب (Decision 2024/GOV/12/03)

5R, the Next Hundred Years: Re-legalisation and Regulation & Respect, Remedy and Reparations
After a century of failed global experiment of prohibition, time has come to work on the post-prohibition era. The Cannabis Embassy and its partners have embarked on a journey for the next 100 years that goes through the safeguard, promotion, defense, diffusion, and recognition of the cannabis-human relationships and their positive impacts on our societies. The Cannabis Embassy continues to advance the rights of people who cultivate, use, like the Cannabis plant and its products –or simply happen to live by places where Cannabis grows or is being grown– and want peace. In the coming century, this means working on the conservation of cannabis ecosystems and the safeguarding of cannabis cultures, both forming part of a shared natural and intangible heritage of humankind, that survived a century of repression and attempts of eradication.
We all deserve peace, and we will continue to work towards bringing peaceful drug policy solution to the failed global war on drugs. For more information, check our our CESCR contribution, GRATK portal, and our UNESCO page.
Partners Sponsors

Cannabis Embassy CENGGA members
Cannabis Embassy’s Non-profit Groups and Grassroots Associations

United Nations CND 2025 Delegation Sponsors
The following entities supported the 2025 Cannabis Embassy delegation in Vienna:
Her Many Voices, South African Cannabis and Hemp Industry Development Association (SACHIDA), Lynx Hemp, AlphaCAT, The Grand History of Cannabis, FAAAT-Forum Drugs Mediterranean, CannaFamily, Hempoint, Magazin Konopi, Cannacare, Mandragora Foundation, Veterans Action Council, CannaBizAfrica, ENCOD, Soft Secrets.

The Grand History of Cannabis
La Crème Gràcia & Mossy Giant
“The Turbulent History of a very misunderstood plant…”
The Grand History of Cannabis is a collaboration between a Catalan social club and a Dutch urban artist to illustrate the tumultuous history of popular cannabis cultures throughout ages & continents.

Sustainable Cannabis Policy Toolkit Reprint Sponsors
The following entities supported the 2025 reprint of the Cannabis SDG policy toolkit
Fields of Green for ALL, FAAAT-FDM, AlphaCAT, Astrasana, Hempoint, Her Many Voices, Cannactiva, Cannafamily, Naarden, Konopny Tata, Boveda, Magazin Konopi
Media Partners

Magazine Konopí
Magazine Konopí is the only print cannabis media in the Czech Republic. It has been established in 2018 by three prominent members of Czech cannabis community. Konopí covers every aspect of cannabis and hemp from laws to medicinal and industrial use and its readers are patients, medical professionals as well as recreational users and hemp and CBD businesses.

Soft Secrets
Soft Secrets is an international bimonthly magazine about cannabis & marijuana cultures. It is edited in Dutch, English (United Kingdom & United States), Spanish (Spain & Latin America), German, French, Italian, Czech, Polish
External Links
Learn more from Media and NGO websites
-
NORML France: "La Cannaparade dit « STOP » à 100 ans de prohibition"
France, 14 May 2025
-
Journal of Pharmaceutical Policy and Practice: "1925–2025: a century of international pharmaceutical law"
United Kingdom, 7 March 2025
-
CannabisTherapy: "Centenary of Cannabis Prohibition: Global Cannabis History Year"
Czech republic, 27 February 2025
-
Fields of Green for ALL: "1925 – 2025 The Centenary Of Cannabis Prohibition"
South Africa, 19 February 2025
-
BeenieWords: "100 Years of Cannabis Prohibition: Time for abolition, not just legalization"
Ghana, 19 February 2025
-
Kannabia: "Los hitos más destacados del sector del cannabis para este año 2025"
Spain, 2 January 2025
-
Cannabis Psychedelics: "2025 – Centenary of Cannabis Prohibition"
Australia, 19 December 2024
-
Legalize Cannabis Queensland: "2025 – Centenary of Cannabis Prohibition"
Australia, 31 October 2024
Photo Galleries
Photo Gallery 2025 United Nations Commission on Narcotic Drugs: Action, Expo, and Discussion on the Centenary of Cannabis Prohibition
















Photo Gallery Escapade in Geneva for Commemoration & Research, 19 February 2025



































Photo Gallery The "Palais des Académies" in Brussels (Palace of the Prince of Orange): where Cannabis was added to the International Pharmacopoeia on 29 September 1925














Photo Gallery The "Salle F" in the Palais Wilson, Geneva (Orange Room, Hôtel National): where Cannabis was added to the International Drug Control System on 19 February 1925











