The best replacement for mephedrone is methylone.

The best alternatives to mephedrone are rated as following:
★★★★★  methylone
★★★★★  mdpv
★★  methadone
★  bath salts
★  methcathinone
★  amphetamine
★  mephedrone
★  methadrone
★  4-mec
★  mdma
★  methedrone
★  cocaine
  methamphetamine
  pentedrone
  ethylphenidate

Your alternative for mephedrone is not listed? Suggest!
Speaking about mephedrone, one probably shouldn't forget about methylone.

Other search terms related to mephedrone and their ratings are:
★★★★★ methylone
You have in mind a companion for mephedrone and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of mephedrone in all years. Click on graph for more.
mephedrone
methylone
mdpv