Cannabis has been used as a medicine for millennia, writes David Nutt, who charts its relatively recent prohibition, the effect on patients such as Billy Caldwell, and the failure of legal reform to make much difference
Cannabis is arguably the world’s oldest medicine, with evidence of such use from 3000 year old tombs in Egypt and Siberia. It had a place in Indian and Chinese medical writing from nearly as long ago. It didn’t enter the UK until the late 1600s, but by the 1800s it was widely used, sold over the counter as an alcoholic tincture for problems such as tetanus and seizures. Its efficacy more broadly became apparent, and the definitive overview was published in the Lancet in 1890 by John Russell Reynolds.1 Because he was the Queen’s physician it is believed that Queen Victoria used cannabis medicines, particularly for period and childbirth pains.
The demise of cannabis as a medicine began rather surprisingly when in 1933 the US Senate voted to rescind the law on alcohol prohibition. This left the threat that 35 000 officers of alcohol prohibition enforcement (now the