What does it look like?

4-CMC Crystal,

  • A very fine white powder
  • A very fine off-white or yellowish powder

Mephedrone was first sold over the internet as an alternative to drugs like speed, ecstasy and cocaine. Dealers sold the drug as ‘plant food’ or ‘bath salts’ and labelled it ‘not for human consumption’ to get around the law.

What does it taste/smell like?

People have compared the smell to cat pee and exhaust fumes, and say that it tastes foul and metallic.

By snorting it

Snorting is the most common way of taking 4-CMC Crystal.

By swallowing it in ‘bombs’

Some people wrap the powder in a cigarette paper and swallow it (known as ‘bombing’).

By taking capsules and pills

It can also be found in capsules and tablets, but this is much less common.

By injecting it

Injecting mephedrone, as with other stimulants, is very risky because of the fast-acting, intensity of the hit. Users often feel the need to redose too, which can result in serious injecting-related injuries as well as overdose.

How does it make you feel?

Mephedrone is often described as being like a mix between speedecstasy and cocaine.

Taking 4-CMC Crystal can make you:

  • alert
  • confident
  • talkative
  • euphoric
  • very affectionate towards the people around you
  • full of energy
  • very sensitive to touch and sexually aroused

It can also make you:

  • anxious
  • on edge
  • agitated
  • feel like your heart is racing or not beating properly (heart palpitations)
  • very hot
  • urgently need to poo lots
  • dizzy
  • grind your teeth (gurn)
  • sweat

How does it make people behave?

Mephedrone is likely to make people:

  • talkative
  • very confident
  • full of energy
  • keen to dance
  • very affectionate towards the people around them (this is sometimes called being ‘loved up’)

People high on mephedrone can also be:

  • over confident
  • anxious
  • on edge
  • agitated
  • How long the effects last and the drug stays in your system depends on how much you’ve taken, your size, whether you’ve eaten and what other drugs you may have also taken.

    It can take you a long time to get to sleep after taking mephedrone. Some users say they suffer from insomnia for several days afterwards.

    Physical health risks

    Taking mephedrone involves risks – and the dangers and long-term effects are becoming clearer as more reports emerge.

    Here’s what we know:

    • There are several deaths a year in the UK from people taking mephedrone.
    • Some users have reported blue or cold fingers – probably because mephedrone affects the heart and the circulation.
    • There have been reports of people being hospitalized due to the short-term effects of mephedrone.
    • Some users have had severe nosebleeds after snorting mephedrone.
    • It risks overstimulating and damaging your heart and your circulation.
    • It risks overstimulating your nervous system, which may cause hallucinations, feelings of agitation and even fits.
    • Overheating has been a significant cause of deaths when other amphetamine-type drugs, such as ecstasy, have been used along with mephedrone.
    • Injecting mephedrone is particularly dangerous for several reasons, including the fact that it’s easier to overdose from injecting.

    Mental health risks

    Mephedrone can lead to:

    • insomnia
    • loss of short-term memory

    What is mephedrone cut with?

    Mephedrone is sometimes cut with:

    • caffeine
    • monosodium glutamate (normally used as a flavour enhancer)
    • benzocaine (a local anaesthetic which can produce a ‘numbing’ effect)

    Is it dangerous to mix with other drugs?

    Yes. You increase the risks to yourself, including the risk of death, if you combine alcohol with mephedrone or any other drug that causes a high.

    Also, you can never be entirely sure that what you’re buying is actually mephedrone and not something else.


1 Kg, 100 Grams, 250 Grams, 50 Grams, 500 Grams


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