Methylphenidate
This page is a reference summary of published evidence and regulatory documents. It is not a substitute for individual medical advice, and it is not a recommendation to take or avoid any medicine.
Medically reviewed by Dr. Sofia Lindqvist, · Last reviewed 11 August 2026
Methylphenidate is a central nervous system stimulant sold under brand names including Ritalin, Concerta, Medikinet and Equasym. It has been in clinical use since the 1950s — considerably longer than any wakefulness agent covered here. It is a Schedule II controlled substance in the United States.
On this page
How it works
1950s
in clinical use since
3–4 h
immediate release duration
8–12 h
extended release duration
C-II
US control status
Methylphenidate blocks the reuptake of dopamine and norepinephrine. Unlike amphetamines, it does not reverse transporter direction and does not trigger substantial release from vesicular stores.
That places it mechanistically between modafinil and amphetamine. It is a reuptake inhibitor like modafinil, but a considerably more potent one, with faster onset and greater abuse liability.
Reuptake blockade → transporter reversal
Modafinil
Methylphenidate
Amphetamines
Position by mechanism, not by clinical usefulness. A more forceful drug is not automatically a better one for a given patient.
Approved uses
ADHD in children and adults.
Narcolepsy, as with amphetamines — the point of overlap with the wakefulness agents on this site.
Formulations
Immediate release (Ritalin)
0.5–4 h
Typically two or three doses per day
Adderall XR
1–12 h
0h
4h
8h
12h
16h
The formulation difference is clinically significant: immediate release requires multiple daily doses and produces more pronounced peaks and troughs.
| Formulation | Duration | Practical consequence |
|---|---|---|
| Immediate release | 3–4 hours | Flexible, but requires redosing and produces a clearer end-of-dose dip |
| Extended release | 8–12 hours | One dose covers the school or working day, with less variability |
Scheduling and safety
Schedule II, the same as amphetamines. Common adverse effects include appetite suppression, insomnia, headache, raised heart rate and blood pressure, and irritability.
As with amphetamines, tapering rather than abrupt discontinuation is the common approach, given rebound and withdrawal concerns.
How is methylphenidate different from amphetamine?
It blocks the reuptake of dopamine and norepinephrine but does not reverse transporter direction or empty vesicular stores. The rise in synaptic catecholamines is therefore smaller than with amphetamines.
How long does it last?
Immediate release lasts roughly three to four hours. Extended-release formulations such as Concerta last eight to twelve.
Is Concerta the same drug as Ritalin?
Yes, the same molecule in a different delivery system. Concerta releases methylphenidate gradually across the day; Ritalin is immediate release.