The Advisory Council on the Misuse of Drugs (ACMD) said it was concerned about an increase in the number of deaths related to misusing the psychoactive drug.

BBC: Tramadol pill

Ecstasy is methylenedioxymethamphetamine, or MDMA for short, which is a synthetic, psychoactive (mind-altering) drug with hallucinogenic and amphetamine-like properties.

CNN: Senate panel probes so-called 'hug drug'

Modern cannabis medications do not produce a "high" - the psychoactive ingredients are either missing or delivered in a much lower dose than in the street drug.

BBC: Cannabis 'cut MS symptoms'