There are records of the cannabis plant being used for medicinal purposes in ancient times, and in the 19th century it was used as an effective anti-epileptic drug (AED) in children. However, because of its abuse potential, most countries imposed laws restricting its cultivation and use, and this has greatly inhibited research into possible therapeutic uses. Things are now changing, and cannabis derivatives are now used legally to treat, for example, pain, nausea and spasticity...... To read the full article, log in using your NHS OpenAthens details.