4-Methylaminorex (4-MAR, 4-MAX) is a stimulant drug of the 2-amino-5-aryloxazoline class that was first synthesized in 1960 by McNeil Laboratories.^[2] It is also known by its street name “U4Euh” (“Euphoria“). It is banned in many countries as a stimulant.

4-Methylaminorex has effects comparable to methamphetamine but with a longer duration.

Not intended for human or animal consumption!

If accidentally swallowed, consult a doctor immediately!