What are the main methylphenidate medications used in ADHD?

B is the correct choice because it includes the primary methylphenidate medications used in the treatment of Attention Deficit Hyperactivity Disorder (ADHD). Concerta, Focalin, and Ritalin are all variations of methylphenidate.

Concerta is an extended-release formulation that allows for once-daily dosing, providing a steady release of medication throughout the day. Focalin, which is a more refined version of methylphenidate, can offer a quicker onset of action and a potentially reduced side effect profile for some individuals. Ritalin, the original formulation of methylphenidate, can be prescribed in both immediate and extended-release forms, making it versatile for different patient needs.

The other options contain medications that are not classified as methylphenidate. For example, Adderall contains amphetamine salts, which work differently than methylphenidate. Strattera is an atomoxetine, a non-stimulant medication used for ADHD, and while it is effective, it is not a methylphenidate. Similarly, Quillivant is a liquid formulation of methylphenidate, but Vyvanse is an amphetamine, and Dexedrine is also an amphetamine-based medication. Thus, the selection of