Cathine, also known as D-norpseudoephedrine or as (+)-norpseudoephedrine, is a psychoactive drug of the phenethylamine and amphetamine groups which acts as a stimulant.

[3] Like amphetamines, cathinone and ephedrine, cathine acts as a norepinephrine releasing agent (NRA).

The World Anti-Doping Agency's list of prohibited substances (used for the Olympic Games among other athletic events) bans cathine in concentrations of over 5 micrograms per milliliter in urine.

Ephedra, found in many Ephedraceae species, is a Chinese and Western herb that contains, among other amphetamines, D-norpseudoephedrine.

[13] A small study of 642 participants in Yemen found that among pregnant women who chewed khat (containing D-norpseudoephedrine) there was no increased risk of stillbirth or congenital malformations.