• Our Upfront article on reassessing recreational drugs referred to the 20 drugs looked at by the UK Science and Technology Select Committee as “stimulants” (5 August, p 5). While cocaine and speed are stimulants, alcohol, heroin and tranquilisers are generally regarded as depressants, and LSD and magic mushrooms are classed as hallucinogens. Cannabis is both a depressant and a hallucinogen, and ecstasy is both a stimulant and hallucinogen.
