Stimulant · cathinone
Mephedrone
aka 4-MMC · Meph · M-Cat · Drone · Bubbles · MEOW · Plant Food · White Magic · 3-MMC · 2-MMC
Last verified
People talk about "meph" as one thing but there are at least three molecules in regular circulation: 4-MMC (the original, scheduled in most of Europe), 3-MMC (slightly more stimulant-skewed, very common in NL and FR), and 2-MMC (newer, less data, treat with extra caution). Reagent kits will not reliably distinguish them. If you bought "3-MMC" you got something cathinone-shaped. What exactly is anyone's guess without a lab test.
What makes mephedrone hard to use safely is not any single dose, it is the redosing curve. The peak is short (45–90 minutes) and the comedown wants you back in the bag immediately. Sessions designed for "just a couple" routinely turn into 12 hours and 2 grams.
Harm reduction
- Weigh every dose. A milligram scale is non-negotiable. Eyeballing cathinone bumps is how people end up at 1.5 g for the night without realising it.
- Set a session budget before you start. Write the number on paper, leave it on the table. Once you've used what you allocated, the rest goes into the freezer until tomorrow.
- Pick one route and stick to it. Switching from oral to nasal to bombing within the same session multiplies dose-tracking errors.
- Liebermann is your best reagent. Marquis is mostly useless for cathinones (no colour change is normal, which is unhelpful). If you have access to a drug-checking service (Energy Control ES, DIMS NL, drugart.cz, ChEckiT! AT), use it.
- Buy fresh. Cathinones oxidise. Old material turns yellow/brown and loses potency unevenly. Vacuum-sealed in a dark freezer it keeps about six months.
- Plan the comedown. Day 2 and 3 are flat. Have food in the fridge, easy plans, no important conversations.
- Combination warnings:
- With MDMA, cocaine, or amphetamines: linear cardiovascular load, non-linear neurotoxicity.
- With SSRIs: blunted effects + raised serotonin syndrome risk if you push the dose.
- With ketamine: classic combo in NL but it lets you stay up far longer than you should; bladder stress doubles.
- Vein health if you inject. Mephedrone is famously hard on veins because of the freeze-thaw cycle of injection prep at low temperatures. Rotate sites. If you can avoid this route entirely, do.
- The 3-MMC question. Treat 3-MMC and 4-MMC as interchangeable for dose; 2-MMC is reported as more euphoric / shorter, but the human data is thin. Start at the threshold dose.
Dosage.
Oral
- Threshold
- 50 mg
- Light
- 75–150 mg
- Common
- 150–225 mg
- Strong
- 225–350 mg
- Heavy
- 350 mg
Insufflated
- Threshold
- 15 mg
- Light
- 30–60 mg
- Common
- 60–120 mg
- Strong
- 120–175 mg
- Heavy
- 175 mg
Rectal
- Threshold
- 30 mg
- Light
- 50–100 mg
- Common
- 100–175 mg
- Strong
- 175–250 mg
- Heavy
- 250 mg
| Route | Threshold | Light | Common | Strong | Heavy |
|---|---|---|---|---|---|
| Oral | 50 mg | 75–150 mg | 150–225 mg | 225–350 mg | 350 mg |
| Insufflated | 15 mg | 30–60 mg | 60–120 mg | 120–175 mg | 175 mg |
| Rectal | 30 mg | 50–100 mg | 100–175 mg | 175–250 mg | 250 mg |
Start at the bottom. Body chemistry, tolerance, and combinations all matter.
Duration.
Oral
total ~ 510 min- Onset
- 30–60 min
- Peak
- 60–120 min
- Offset
- 60–90 min
- After
- 2–4h
Insufflated
total ~ 405 min- Onset
- 5–15 min
- Peak
- 30–60 min
- Offset
- 45–90 min
- After
- 2–4h
Rectal
total ~ 475 min- Onset
- 10–25 min
- Peak
- 60–120 min
- Offset
- 60–90 min
- After
- 2–4h
Effects.
Positive
- Empathogenic warmth, MDMA-like at lower doses
- Stimulating euphoria
- Talkativeness and social ease
- Music enhancement
- Sexual arousal at moderate doses
Neutral
- Mild visual distortion at higher doses
- Mydriasis (dilated pupils)
- Bruxism (jaw clenching)
- Short duration triggering compulsive redosing
Negative
- Hard cravings and binge pattern within a session
- Vasoconstriction (cold extremities, blue fingers)
- Nasal damage from repeated insufflation
- Notable serotonin/dopamine depletion 24–72 h after
- Lasting low mood and anhedonia after heavy use
Interactions.
Heads up
Many drug combinations are unsafe even at low doses. When in doubt, take less or abstain. Always cross-check with the interaction checker tool.
Dangerous
Combination may cause serious harm. Avoid.
- maois
Unsafe
Substantial risk. Combination not recommended.
- cocaine
- amphetamine
- methamphetamine
- mdma
- alcohol
- dxm
- tramadol
Caution
Mild interaction. Use with reduced doses.
- cannabis
- ketamine
- ssris
- opioids
Testing.
- ReagentMarquisExpected reactionNo reaction or faint yellow (negative-looking, which itself is a clue)
- ReagentMeckeExpected reactionNo reaction
- ReagentMandelinExpected reactionYellow
- ReagentLiebermannExpected reactionYellow to orange (best for cathinones)
- ReagentMorrisExpected reactionYellow then deepens
| Reagent | Expected reaction |
|---|---|
| Marquis | No reaction or faint yellow (negative-looking, which itself is a clue) |
| Mecke | No reaction |
| Mandelin | Yellow |
| Liebermann | Yellow to orange (best for cathinones) |
| Morris | Yellow then deepens |
Cross-check with a secondary reagent. Tests tell you what something isn't, not always what it is.
Legal status.
- DEGermanyIllegal
- ATAustriaNPSG-regulated
- CHSwitzerlandIllegal
- NLNetherlandsSchedule II
- BEBelgiumIllegal
- LULuxembourgIllegal
- FRFranceIllegal
- ESSpainIllegal
- PTPortugalDecriminalised
- ITItalySchedule I
- PLPolandIllegal
- CZCzechiaIllegal but tolerated
- SESwedenIllegal
- DKDenmarkIllegal
- NONorwayIllegal
- FIFinlandRegulated
- IEIrelandIllegal
- UKUnited KingdomClass B
- USUnited StatesSchedule I
- CACanadaSchedule I
- AUAustraliaSchedule 9
- TRTurkeyIllegal
- NZNew ZealandClass C
- BRBrazilIllegal
| Country | Status |
|---|---|
| DEGermany | Illegal |
| ATAustria | NPSG-regulated |
| CHSwitzerland | Illegal |
| NLNetherlands | Schedule II |
| BEBelgium | Illegal |
| LULuxembourg | Illegal |
| FRFrance | Illegal |
| ESSpain | Illegal |
| PTPortugal | Decriminalised |
| ITItaly | Schedule I |
| PLPoland | Illegal |
| CZCzechia | Illegal but tolerated |
| SESweden | Illegal |
| DKDenmark | Illegal |
| NONorway | Illegal |
| FIFinland | Regulated |
| IEIreland | Illegal |
| UKUnited Kingdom | Class B |
| USUnited States | Schedule I |
| CACanada | Schedule I |
| AUAustralia | Schedule 9 |
| TRTurkey | Illegal |
| NZNew Zealand | Class C |
| BRBrazil | Illegal |
Information, not legal advice. Status varies by region and changes over time.
FAQ.
How long does Mephedrone last?
A typical oral Mephedrone experience peaks around 60–120 minutes and then tails off, with after-effects that can run several hours. The exact window depends on dose, body weight and what else you've eaten or taken.
Can you overdose on Mephedrone?
Yes. Higher doses sharply raise the risk of acute harm (cardiovascular strain, hyperthermia, serotonin issues for serotonergic drugs, respiratory depression for downers). Stick to the lowest dose that gives you the effect you're after, never re-dose blindly, and use our [dose calculator](/tools/dosage-calculator) before you weigh anything out.
Is Mephedrone addictive?
Mephedrone can produce psychological dependence with frequent use, especially in unstable settings or when used to self-medicate. Physical dependence varies by substance class; the safest pattern is occasional use with long breaks (often 4–6 weeks minimum) and an honest read on why you're reaching for it.
What does Mephedrone feel like?
Common subjective effects include the ones listed in the Effects section above. Set and setting massively shape the experience: a calm space, trusted people, food eaten, sleep the night before, and your own current mood all matter more than most people expect.
Can you mix Mephedrone with alcohol?
Mixing with alcohol is rarely a good idea. it dulls your judgement of how much you've taken, dehydrates you, and stacks cardiovascular load. If alcohol is on the table, drink less than normal, alternate with water, and run the combination through our [interaction checker](/tools/interaction-checker) first.
How do I test Mephedrone at home?
A basic reagent kit (Marquis + Mandelin + Mecke for most stimulants/entactogens; Ehrlich for tryptamines) gives you a fast presence check. It does NOT measure dose or purity, but it does rule out the most dangerous misrepresentations. See the [reagent guide](/tools/reagent-guide) for expected colors per reagent.
How much Mephedrone is too much?
There's no single number that applies to everyone. As a rule, anything above the 'strong' dose range (225-350 mg for the primary route) carries sharply higher risk of acute harm. Start low, don't redose blindly, and remember that purity varies batch to batch.
How long until Mephedrone kicks in?
Onset is typically 30-60 minutes via the primary route. Don't redose because you 'don't feel anything yet.' Many people have overdone it by stacking doses during the come-up window.
Can you build tolerance to Mephedrone?
Yes. Regular use builds tolerance, meaning you need more for the same effect. This escalation increases both health risk and dependence potential. The best counter is long breaks between sessions (2-4 weeks minimum for most substances, 3 months for MDMA-class drugs).
Is Mephedrone tested for in standard drug screens?
Standard 5-panel workplace tests (SAMHSA-5) do not specifically screen for Mephedrone. Extended panels (10-12 panel) or specialized tests may detect it. If testing is a concern, research the specific panel being used.