Pet Safety / Compounds / Mephedrone (4-MMC)

Is Mephedrone (4-MMC) safe for dogs and cats?

High risk for pets

Sympathomimetic and serotonergic toxicity risk. Seek immediate veterinary care.

What is mephedrone (4-mmc)?

The IUPAC name is 2-(methylamino)-1-(4-methylphenyl)propan-1-one.

Also known as: mephedrone, 4-methylmethcathinone, Meow meow, 4-MMC.

IUPAC name
2-(methylamino)-1-(4-methylphenyl)propan-1-one
CAS number
1189805-46-6
Molecular formula
C11H15NO
Molecular weight
177.24 g/mol
SMILES
CC(NC)C(=O)c1ccc(C)cc1
PubChem CID
45266826

Risk for dogs

High risk

Sympathomimetic and serotonergic toxicity risk. Seek immediate veterinary care.

Risk for cats

Very high risk

Serotonin syndrome risk extremely high in cats due to impaired serotonin metabolism.

Regulatory consensus

2 regulatory and scientific bodies have classified Mephedrone (4-MMC). The classifications differ — that's the data.

AgencyYearClassificationNotes
DEA2012Schedule I controlled substance
UK2010Class B controlled drug (Misuse of Drugs Act)

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where pets encounter mephedrone (4-mmc)

  • Illicit Drug
  • Research Chemical

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Mephedrone (4-MMC):

  • No safe consumer alternative exists
    Trade-offs: N/A — synthetic cathinone with serotonin syndrome risk, cardiac toxicity, and abuse potential.
    Relative cost: N/A

Frequently asked questions

Is mephedrone (4-mmc) safe for pets?

Sympathomimetic and serotonergic toxicity risk. Seek immediate veterinary care.

See Mephedrone (4-MMC) in the pets app

Look up products containing mephedrone (4-mmc), compare to alternatives, and explore the full data record.

Open in pets View raw API data

Sources (1)
  1. —

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →