Medical Cannabis Advocacy in Australia and New Zealand during the 1940s
A quiet decade dominated by prohibition, wartime pharmacy shortages, and a handful of doctors still prescribing cannabis tinctures.
There was no organised 'medical cannabis advocacy movement' in 1940s Australia or New Zealand in the modern sense. Cannabis was already being restricted state by state, wartime supply had collapsed, and the pharmacopoeias were quietly dropping it. What existed was inertia — a handful of doctors still writing tincture scripts and pharmacists still stocking Indian hemp extract — plus scattered press debate. Modern retellings sometimes inflate this into a lost golden age of advocacy. It wasn't. It was the slow end of a Victorian-era medicine.
Legal backdrop entering the 1940s
By 1940, cannabis was already a controlled substance across most of Australasia. Australia's states had progressively added 'Indian hemp' to dangerous drugs schedules following the 1925 Geneva International Opium Convention, which Australia ratified in 1934 [1]. Victoria led with the Poisons Act 1928; New South Wales followed with the Police Offences (Drugs) Act 1935. New Zealand had scheduled cannabis under the Dangerous Drugs Act 1927, which implemented the same Geneva obligations [2].
Crucially, these laws did not ban medical use. They restricted supply to pharmacists dispensing on a doctor's prescription and required record-keeping. So a GP in Sydney or Auckland in 1940 could, in principle, still write a script for tincture of cannabis — and some did Strong evidence.
What doctors actually prescribed
Cannabis remained listed in the British Pharmacopoeia editions used across the Commonwealth throughout the decade, appearing as Extractum Cannabis and Tinctura Cannabis [3]. The British Pharmaceutical Codex (1934, still in wide use) described indications including insomnia, migraine, dysmenorrhoea, and as an adjuvant in cough mixtures [4].
However, prescribing had been declining since the 1910s. Standardisation was poor — potency varied wildly between batches — and newer synthetic sedatives (barbiturates from the 1920s onward) were more predictable. By the 1940s cannabis tincture was a legacy medicine, used mostly by older practitioners who had trained with it Strong evidence. There is no evidence of any organised Australian or New Zealand medical body defending cannabis prescribing during this period No data.
Wartime supply collapse
The Second World War disrupted the international drug trade that supplied Australasian pharmacies. Indian hemp extract was largely imported from India and, before the war, from continental European manufacturers. Shipping restrictions, currency controls, and the Commonwealth's centralised wartime drug purchasing reduced availability of many botanical medicines, cannabis included [1].
This is often overlooked in modern retellings: the practical disappearance of cannabis from Australasian pharmacies in the 1940s owed as much to supply chain failure as to prohibition. Pharmacists simply substituted other sedatives and analgesics when tincture stocks ran out Weak / limited.
Was there advocacy?
In a word: barely. The 1940s produced no equivalent of the LaGuardia Committee Report (New York, 1944) [5] in Australia or New Zealand. No royal commission examined cannabis. The Medical Journal of Australia and the New Zealand Medical Journal published occasional case notes and pharmacology references to cannabis in the 1940s, but no sustained editorial campaign for or against medical use has been documented in secondary historical reviews of the period [6].
What historians such as Desmond Manderson have documented is the opposite: a bipartisan Australian consensus that cannabis was a foreign 'menace,' fed by sensational press coverage of American reefer-scare stories and occasional local incidents involving migrant communities [1]. This narrative hardened during the 1940s and set the stage for the total prohibitions of the 1950s and 1960s Strong evidence.
New Zealand's picture is similar. Redmer Yska's history of NZ drug policy finds virtually no domestic cannabis debate in the 1940s — the drug simply wasn't culturally present enough to argue about [2] Strong evidence.
Myths about the era
Several myths circulate in modern cannabis-culture writing about this period. Worth flagging:
- 'Australian doctors fought to keep cannabis legal in the 1940s.' No documented organised campaign exists No data. Individual doctors continued prescribing; that is not advocacy.
- 'Cannabis was banned in Australia in the 1940s.' The foundational restrictions were in the 1920s–1930s [1]. The 1940s was a decade of consolidation, not initial prohibition.
- 'Wartime shortages caused the medical ban.' The shortage was real but supply and legal restriction were parallel developments, not cause-and-effect Weak / limited.
- 'The LaGuardia Report influenced Australasian policy.' No evidence it did during the 1940s. Australian and NZ policymakers followed British and League of Nations / early UN lead, not American research [1] Strong evidence.
End of the decade
By 1949, tincture of cannabis was still technically prescribable but rarely stocked. Australia would formally align cannabis controls with the 1961 UN Single Convention in the following decades, and the drug was removed from the British Pharmacopoeia in 1954 [3]. The 1940s, then, is best understood as the quiet endpoint of nineteenth-century botanical cannabis medicine in Australasia — not a lost era of activism, but a slow institutional forgetting that would only be reversed by the medical cannabis reforms beginning in Australia in 2016 and New Zealand in 2020.
Sources
- Book Manderson, D. (1993). From Mr Sin to Mr Big: A History of Australian Drug Laws. Oxford University Press.
- Book Yska, R. (1990). New Zealand Green: The Story of Marijuana in New Zealand. David Bateman.
- Government General Medical Council (UK). British Pharmacopoeia, editions 1932 and 1948. HMSO, London.
- Book Pharmaceutical Society of Great Britain (1934). British Pharmaceutical Codex. Pharmaceutical Press, London.
- Government Mayor's Committee on Marihuana (1944). The Marihuana Problem in the City of New York ('LaGuardia Report'). Cattell Press.
- Peer-reviewed Wodak, A., Reinarman, C., Cohen, P.D.A., & Drummond, C. (2002). Cannabis control: costs outweigh the benefits. BMJ, 324(7329), 105–108.
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