Mkpuru Mmiri
Last reviewed Saturday, October 24, 2026Mkpuru mmiri is the Igbo name, literally “seed of water”, for crystal methamphetamine, a powerful stimulant. Its use spread sharply in South-East Nigeria from late 2021 and prompted community campaigns across the region. It can cause days without sleep, aggression and psychosis, and addiction to it is treated with structured support, not punishment.
Also called: crystal meth; meth; methamphetamine; ice; crystal. It’s also written mkpurummiri or mkpurumiri.
What it does
Methamphetamine is a lab-made stimulant. It brings a rush of energy, confidence and wakefulness, and takes away appetite, for hours at a time. The high wears off into a heavy crash, so people often take more in binges to put the crash off. Tolerance builds fast, so the amount needed climbs quickly, and addiction can follow.
Main harms
- Sleep and body: days without sleep, sharp weight loss and badly damaged teeth.
- Mood and behaviour: anxiety, irritability, aggression and paranoia.
- Psychosis: hearing voices, or believing you’re being followed. One review estimates that up to about 4 in 10 people who use methamphetamine have psychotic symptoms. For many it passes within days of stopping, but in some it comes back or lasts.
- Heart and brain: a racing or irregular heartbeat, high blood pressure, stroke and overdose.
- The crash after stopping: low mood, anxiety, poor sleep and cravings for about a week, with low mood and cravings that can go on for months.
In Nigeria
The NDLEA says an outbreak of crystal methamphetamine use began in late 2021, mostly in the South-East, after many communities cried out for help. It has since raided labs making the drug in Lagos and Anambra. Researchers surveying the five South-East states in 2023 called it the region’s most common and accessible new drug. Like other illegal drugs, it falls under the NDLEA‘s enforcement.
It’s often missed as a mental health problem. A young person taken to hospital or a prayer house for “madness” may be in stimulant psychosis, which changes what treatment is needed.
Why public shaming doesn’t help
Some community responses have been violent. In 2021, young people in parts of Imo State were publicly flogged for using it, and in one reported case a mob beat a man to death after finding the drug on him. Shaming and beating don’t treat addiction. They drive use underground and make it far less likely that anyone asks for help. International standards from the UN’s drug office and WHO say treatment shouldn’t be forced, and that beatings, chaining and withholding food should never be used. Nigeria’s Mental Health Act bans chaining.
Addiction treatment
No medicine is approved to treat methamphetamine addiction. Care is structured psychosocial treatment over months:
- Contingency management: small rewards for drug-free tests. It’s the best-studied approach, mostly in the US.
- CBT and relapse prevention: spotting triggers and planning for cravings.
- Motivational interviewing and group support.
- Medical care for psychosis, sleep and physical damage, from a doctor who can prescribe if needed.
Treating depression and anxiety matters too, because they often set off relapse. Relapse is part of the course, not a sign of failure. Families need their own support, and our guide to choosing a rehab centre explains what good treatment looks like and the warning signs to walk away from.
Meth psychosis vs schizophrenia
Psychosis from methamphetamine can look just like schizophrenia. When symptoms linger after use stops, the two can be hard to tell apart. Doctors look at how the symptoms track drug use, and what family have noticed helps. Staying off the drug is the most direct way to stop psychosis returning; heavy drinking and stress make a return more likely.
When to get help
Call 112 (or 767 in Lagos) now if someone has chest pain or a seizure, collapses or is hard to wake, or is so agitated or paranoid they may hurt themselves or others. If you or someone else is thinking about suicide, call 112 (or 767 in Lagos), or Safe Place Nigeria on 0800 800 2000. The full list is on our helplines page.
For the longer work:
- The NDLEA helpline, 0800 1020 3040. Free and open 24 hours, in English, Pidgin, Hausa, Yoruba and Igbo. Psychologists and counsellors offer telephone counselling and referrals, and its website says callers’ information is kept confidential.
- A doctor or hospital, for a medical assessment, especially if there’s psychosis. The Federal Neuro-Psychiatric Hospital, Yaba, runs an addiction clinic.
- A licensed therapist. You can book a substance use therapist on Mytherapist.ng alongside medical care.
If you’re worried about your child, start with a family doctor or the school counsellor, and you can book therapy for yourself as a parent.
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This entry is awaiting clinical review. It’s based on published research and health guidelines, and we’ll update it once a clinician has reviewed it.
