Methylphenidate SR

What it isSustained-release dopamine and norepinephrine reuptake inhibitor (RITALIN SR, 1982); ADHD.

Why this oneIts Wax-matrix CR tablet gives 4-8 h (Carlat Table 1) of less predictable coverage than modern long-acting products.

What limits itDo not crush the tablet. Abuse, appetite loss, insomnia, and blood-pressure elevation retain the usual stimulant limits.