What is the difference between 3-MMC and 4-MMC?

3-MMC and 4-MMC (meow meow/mephedrone) are both stimulants. Users feel energized by both drugs and tend to talk a lot. The euphoric effect of 3-MMC is less than that of mephedrone. The duration of 4-MMC is between 1.5-3 hours when used orally (swallowing). With nasal use (sniffing) this is 45 minutes to 1.5 hours. The effects of 3-MMC seem to last a little longer than those of 4-MMC.

Users report craving for both substances. That is the urge to take another line. The craving may be stronger with 3-MMC than with 4-MMC.

The names 3-MMC and 4-MMC are very similar. This is because the atoms that make up the molecules are the same, only the place where they bond is slightly different. In the case of 3-MMC it is at position 3, and for 4-MMC at position 4. So the molecules are very similar and therefore they also work in a very similar way in the brain.