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).
Vitamin R (Leading Us Along)
"Vitamin R (Leading Us Along)" is a single from Chevelle's album "This Type of Thinking (Could Do Us In)". It was their second number-one hit on the "Billboard" Hot Mainstream Rock Tracks chart and reached number three on the "Billboard" Hot Modern Rock Tracks chart. In interviews, it has been stated that "Vitamin R" is Ritalin. The song was written about a friend of the Loeffler brothers, who was misdiagnosed with ADHD, and developed an addiction to Ritalin.