Attention deficit hyperactivity disorder management
There are two major medications derived from methylphenidate's isomers: a racemic mixture of half d-threo-methylphenidate and half l-threo-methylphenidate called methylphenidate (Ritalin, Concerta), and an enantiopure formulation containing just d-threo-methylphenidate called dexmethylphenidate (Focalin).
Punicalin
Punicalin is an ellagitannin. It can be found in "Punica granatum" (pomegranate) or in the leaves of "Terminalia catappa", a plant used to treat dermatitis and hepatitis. It is also reported in "Combretum glutinosum", all three species being Myrtales, the two last being Combretaceae.