top of page

Cannabis is the most widely used drug in the UK and the USA and arguably, the world. Most of the cannabis bought in the UK is now actually grown here. Its positive & negative effects on the mind and the medical benefits are widely debated. This page aims to arm you with the facts and also harm reduction information to help you stay safer when using cannabis.

What is cannabis?

Cannabis is a plant which can be grown naturally in most hot countries. However, due to the easy access to growing equipment, it can also be grown indoors. It is the flowers (buds) of the female plant that users use to get high. It falls into the hallucinogenic category of drugs because it mildly affects your five senses (smell, sight, taste, touch and sound). The two main chemicals in cannabis are THC (Tetrahydrocannabinol) and CBD (Cannabidiol). These chemicals are known as cannabinoids and it is reported that there are over 100 different cannabinoids found in the cannabis plant.

What is Cannabis?
How is it made?

How is it made?

Cannabis takes between 3 and 5 months to fully grow. A lot of the cannabis on the streets of Lanarkshire today is grown in Scotland. Growing cannabis in the UK is illegal and can lead to up to 14 years in jail if you are caught.

You need a lot of equipment and a decent bit of knowledge to grow cannabis indoors.


We can't tell you too much about that but here is what we can tell you about the production process:

journey of cannabis plant.png
Cannabis Strains

Cannabis Strains

There are thousands of different types of the cannabis plant - these are known as strains. To find out more about the different cannabis strains and how you might feel if you use these strains visit the Leafly site. This website categorises almost all known strains of the cannabis plant.

Please note: this website may be blocked on computers with internet keyword filters.

a quick guide to.png

How do people use cannabis?

The most common way for people to use cannabis is in a joint, with tobacco.

Some other methods are:

  • Bong

  • Bucket

  • Pipe

  • Vaporizer

  • Vape pens

  • Blunt

  • Edibles

cannabis stuff 1.png
How do people use cannabis?

Cannabis and The Body

Cannabis can affect users in different ways. Some effects can be positive and some effects can be negative. There is a lot of misinformation around about the effects of cannabis. This section just looks at the short term effects of cannabis use.

The effects are (from positive to negative):

  • Happy or Euphoric

  • Giggly (hitting the giggles)

  • Hungry (the munchies)

  • Relaxed

  • Talkative and sociable


  • Slurred or slowed speech

  • Lost sense of time and reality

  • Heightens your five senses (taste, touch, smell, sight & sound)


  • Anxious

  • Paranoid

  • Tired

  • Memory problems

  • Lazy & demotivated

The Stoneover

A stoneover is the feeling you have the morning after using a lot of cannabis. You can feel a bit slow, groggy and down. It's a mild comedown caused by cannabis use. Like a hangover, the only way to get rid of it is rest and time. Make sure you drink plenty of water and eat healthily. It might be a good idea not to drive or operate any heavy machinery as your reaction times may be affected.

The Science Bit

An analysis by DrugScience which added up and compared the harm caused by 20 different drugs in the UK placed cannabis roughly in the middle; it causes more harm to society than several other illegal drugs (mostly because there are many more users) but less harmful to its users than the legal drugs tobacco and alcohol, both of which have a higher potential to cause serious illness and death.

Cannabis & The Body

Long-term use

People that use high strength cannabis - those who use every day over a long period of time, are at risk of developing a dependence or addiction to cannabis.

More research is needed in this field, however, it is widely accepted that regular users of cannabis might be at risk of the following:

  • Difficulty making decisions

  • Difficulty learning new things

  • Difficulty making future plans


If you are like most UK users of cannabis and you roll joints with tobacco, you are at risk of many different illnesses and cancers.

If you are concerned about your cannabis use or someone else's, your Doctor can help by linking you into some local help services. Contact your family GP or Doctor for further help. Have a look at our Further Information section at the bottom of this page for more information.

Long Term Use

Cannabis & Mental Health

There has been a lot written in the media about the link between regular cannabis use and mental ill-health. As of date there is no definitive answer, however, it is widely recognised that cannabis containing higher levels of THC (also known as skunk) can have a negative impact on users mental health.

For more information visit the DrugScience website.

The Law

Cannabis is a ‘Class B’ drug as categorised by the Missuse of Drug Act (1971). It is illegal to possess, give away, sell or grow cannabis.


Up to 5 years in prison

Unlimited fine

Or both



Up to 14 years in prison

an unlimited fine

or both



Up to 14 years in prison

an unlimited fine

or both


Driving Offences
Like any drug, if you are caught driving under the influence of drugs you could receive a heavy fine, driving ban, or prison sentence. Not to mention it is extremely dangerous to yourself and other road users.

Q: Is it illegal to smoke weed in your own home?

A: It is illegal to smoke weed anywhere in the UK - including on your own property. If you live in rented accommodation your landlord can evict you if you are caught using cannabis.

weed driving.png
The Law


One of the healthiest ways for your body to consume cannabis is eating it. This is because you are not damaging your lungs when you do so. However, eating cannabis can result in you absorbing more THC than you’re used to. The effects may be a lot stronger and last longer.

If you are thinking about trying edibles here is some stuff you should be aware of:

The effects might last longer and be much stronger than you’re used to.

Consider eating half the amount, if you don’t feel as stoned as you want to, you can always eat more. Sometimes it’s best to start with a low dose to see how it’s going to feel first. Edibles aren’t for everyone.

Be Patient

Edibles can take between 30 mins and 2 hours before you feel their effects.


Medical Cannabis

The UK Government recently agreed to make cannabis-based medicine legally available. From the 1st of November 2018 cannabis-based medicine is available on prescription.

“cannabis-based products can be prescribed medicinally where there is an unmet clinical need.” –NHS England Cannabis Brief (31st October 2018)

Here are two of the cannabis-based medicines available at the moment on the NHS:

  • SATIVEX contains both THC & CBD extracted from two different strains of the cannabis plant and is used for treating MS.

  • Nabilone is a medicine, taken as a capsule that has been developed to act in a similar way to THC but is not made from the cannabis plant, it is a synthetic cannabinoid. 

The current position is that no cannabis-based products for medicinal use are routinely available in the NHS in Scotland. When licensed, products will become subject to normal NHS appraisal processes.

Medical Cannabis
Drug Testing

Drug Testing Facts

Cannabis can be detected in your body a few different ways. Many employers randomly drug test their employees. Some of them can even test for drugs before you start the job... This means you may have to give a urine, blood or saliva sample if asked. See the image below to find out how cannabis can be detected in your system:

Cannabis testing.jpg

The amount of time cannabis can be detected in your body depends on your; weight, height, tolerance levels and how often you use it. Regular users might test positive for longer.

Harm Reduction

If you decide to use cannabis, think about the following harm reduction messages.

harm reduction cannabis.png
Harm Reduction

Further Information

 Have a look at the links below for further reading and information. 

Further Information
bottom of page