CLEAR does not advocate, condone, or encourage breaking the law. It exists to promote a change in the law by legitimate means. All information on this website should be viewed in this context.




A Female Cannabis Plant In Early Flower



What Is Cannabis?

Cannabis is a stimulating-hallucinogenic depressant with anti-psychotic properties, it's not your normal run of the mill drug.


To be strictly accurate and possibly pedantic cannabis is not a drug; cannabis is a plant which produces a range of active chemicals which we call drugs. Some forms of the plant contain a substance known as THC which, together with certain other chemicals made by the plant, produce an effect on perception known in much of the world as "getting stoned".

The cannabis experience is the combined effect of several drugs, not simply the effect of THC alone and different types (strains) of the cannabis plant produce different ratios of the active drugs and therefore have subtly different effects on the user. Some forms of cannabis do not contain very much if any THC.

This section will provide information on the plant, it's benefits and risks.

UKCIA Research Collection

UKCIA holds a large collection of studies and information about cannabis
readmoreSearch UKCIA here
Medical uses

a whole section is devoted to this aspect


readmoreMedical cannabis


The many uses of Hemp


readmorePart 1 and Part 2 - Nuff Said

The plant

readmoreThe Importance Of Matured Cannabis - Paul Lawrenson
Cannabis and Mental Health

readmoreDoes Cannabis Make You Mad? - Derek Williams


readmoreCBD - The Non-Psychoactive Cannabinoid? Peter Reynolds

readmoreNew Research Into Cannabis And Mental Health - Will Gibson, University Of Reading

readmoreCOMT Gene Cannabis Scare Story Disproven Again - Peter Reynolds

readmoreCOMT; another "wrong" result for the reefer madness hype - Derek Williams

Health risks

readmoreA summary of the health harms of drugs (NHS) - Critique of the cannabis information - Derek Williams
Using cannabis

readmoreToke Pure - a CLEAR safer use campaign