Key facts
Drug class
Stimulant
UK brands
Ritalin, Concerta XL, Medikinet, Medikinet XL, Equasym XL, Xaggitin XL, Delmosart
Onset
Usually within about an hour
Typical duration
3 to 4 hours immediate release, 8 to 12 hours modified release
Legal status
Schedule 2 controlled drug
Who can start it
A Consultant Psychiatrist or other ADHD specialist, not a GP
What methylphenidate is
Methylphenidate is a stimulant and the most widely prescribed medicine for ADHD in the UK. It works by increasing the availability of dopamine and noradrenaline in the parts of the brain that handle attention, motivation and impulse control. It is one of the three stimulant options licensed here, alongside lisdexamfetamine and dexamfetamine.
Unlike the others, methylphenidate is not a single product. It is sold under several brand names that contain the same active ingredient but release it on very different curves. That distinction matters more than most people expect, and it is the main thing this guide sets out to explain.
NICE guideline NG87 makes methylphenidate the usual first choice for children and young people aged five and over, and one of two first-line options for adults. Our guide to ADHD medication in the UK sets out how it compares with everything else available.
The UK brands, and how they differ
Same active ingredient, different release profiles and different days.
Scroll the table sideways to see every column.
The numbers describe how the dose is split. Concerta XL releases 22 per cent immediately and 78 per cent gradually, which front-loads less and lasts longer. Medikinet XL is an even 50/50 split, so more arrives at once and it finishes sooner. Equasym XL is 30/70, which sits between the two but is designed to be taken before breakfast.
Prescribed by brand, not generically
The MHRA advises that modified-release methylphenidate is prescribed by brand name. The products are not interchangeable, and being switched between them without meaning to can noticeably change how a day feels. If your prescription or pharmacy supply changes brand, it is worth raising rather than assuming it makes no odds.
Who methylphenidate is prescribed for
In the UK, methylphenidate is licensed for children aged six and over as part of a wider treatment programme. It is not licensed for children under six.
Adult licensing depends on the product rather than the drug, which is a distinction worth knowing. The modified-release brands, including Concerta XL and Medikinet XL, are licensed for adults as well as children. The short-acting immediate-release tablets, including Ritalin and immediate-release Medikinet, are not licensed for adults. Prescribing a short-acting product to an adult is off-label, which a specialist can do where it is clinically justified.
NICE offers it first to children and young people aged five and over. For adults, either methylphenidate or lisdexamfetamine is offered first, and the choice between them is made on clinical history rather than on any test.
Clinical context
Checks before starting
A specialist will check height, weight, pulse and blood pressure before starting, and ask about heart conditions in you and your family. These checks are repeated during treatment, and in children height and weight are tracked at every review because stimulants can slow growth.
Methylphenidate is generally avoided where there is significant cardiovascular disease, uncontrolled high blood pressure, hyperthyroidism, glaucoma, phaeochromocytoma, or a history of certain psychiatric conditions, and it is not combined with monoamine oxidase inhibitors.
Where methylphenidate is unsuitable, has not been tolerated, or has not helped enough at an adequate dose, a specialist may consider lisdexamfetamine or a non-stimulant option.
Dosage and titration in the UK
Doses differ by brand and by formulation, so a figure that applies to one product will not apply to another. What is consistent is the approach: start low, increase in steps, and review at each stage.
Immediate-release methylphenidate is usually started at a low dose taken two or three times a day, then adjusted weekly. Modified-release products are taken once in the morning, and the dose is stepped up at similar intervals. Some people are established on a modified-release capsule with a small immediate-release dose later in the day to extend cover, which is a specialist decision rather than something to arrange independently.
Our guide to titration explains what the appointments involve and how progress is tracked. The aim is the lowest dose that gives a useful benefit with side effects you find acceptable, not the highest dose you can tolerate.
Controlled drug
Methylphenidate is Schedule 2, so it is treated differently from ordinary medicines rather than issued as a repeat prescription, each prescription covers about a month, and identification may be requested at the pharmacy. Once your dose is stable, prescribing can sometimes move to your GP under a shared care agreement, although a practice can decline.
How long methylphenidate lasts
This depends entirely on the formulation. Immediate-release products last three to four hours, which is why they are usually taken more than once a day. Modified-release products last around eight hours for Medikinet XL and Equasym XL, and up to twelve for Concerta XL and its bioequivalents.
Longer is not automatically better. Someone who only needs cover for a school day, or who is sensitive to a stimulant late in the day, may do better on a shorter-acting option. The right answer depends on the shape of the day being covered, which is a conversation worth having properly at review.
Duration also varies between individuals. A dose that covers one person until early evening may fade by mid-afternoon for someone else. Some people notice a period as it wears off where tiredness or low mood is more apparent, which is often addressed by adjusting the dose or timing rather than changing medicine.
Methylphenidate side effects
Like all medicines, methylphenidate can cause side effects, and not everyone gets them. Most are mild, appear early, and settle within the first few weeks. Our general guide to ADHD medication side effects covers all the licensed options.
Common
- Reduced appetite, and sometimes weight loss
- Difficulty getting to sleep
- Headache
- Dry mouth
- Stomach ache or nausea
- Feeling anxious, restless or irritable
- A modest rise in heart rate or blood pressure
Less common
- Low mood, or mood becoming more changeable
- Tics, or existing tics becoming more noticeable
- Slowed growth in children, which is why height and weight are monitored
- Palpitations
Timing solves more of these than people expect. Difficulty sleeping is very often a dose taken too late rather than the wrong medicine, and appetite loss is frequently managed by moving meals rather than changing treatment.
When to contact your prescriber
Seek medical advice promptly for chest pain, breathlessness, fainting, a fast or irregular heartbeat, signs of poor circulation in the fingers or toes, or new or worsening thoughts of self-harm. Seek advice urgently if reality starts to feel distorted, for example hearing or seeing things that are not there, believing things other people do not, or becoming unusually suspicious; or if mood becomes unusually elevated, racing or overactive with little need for sleep. Do not stop the medication abruptly without advice. Suspected side effects can also be reported through the MHRA Yellow Card scheme.
- Appetite and weight Why it happens and how it is managed
- Alcohol Risks and practical guidance
- Anxiety Whether medication helps or makes it worse
Common questions
Is Ritalin the same as methylphenidate?
Ritalin is a brand of methylphenidate. Several other brands contain the same active ingredient, including Concerta XL, Medikinet, Equasym XL, Xaggitin XL and Delmosart, but they release it differently and are not interchangeable.
Which methylphenidate brand is best?
There is no single best brand. The choice depends on how many hours of cover you need, whether you can take it with food, and how you respond. Most people try one and adjust from there.
Can my GP prescribe methylphenidate?
A GP cannot start it. Treatment has to be initiated by a specialist such as a Consultant Psychiatrist after a full assessment. Once your dose is stable, a GP may agree to continue prescribing under a shared care agreement, though practices can decline.
How long does methylphenidate take to work?
Usually within about an hour of a suitable dose. Finding the dose that works well for you is a separate question and typically takes several weeks of titration.
Why was my brand changed at the pharmacy?
Supply issues sometimes prompt a substitution. Because modified-release brands are not interchangeable, the MHRA advises prescribing by brand, so it is worth raising with your prescriber or pharmacist rather than assuming it makes no difference.
Is methylphenidate a controlled drug?
Yes. It is Schedule 2 in the UK, so it is treated differently from ordinary medicines rather than issued as a repeat prescription, each prescription covers about a month, and identification may be requested at the pharmacy.
Is short-acting methylphenidate licensed for adults?
No. The immediate-release tablets are licensed for children aged six and over, so adult use is off-label and a specialist decision. The modified-release brands such as Concerta XL and Medikinet XL are licensed for adults.
Important
This information is general and educational. It is not a substitute for medical advice. Decisions about starting, changing or stopping ADHD medication are always made together with a Consultant Psychiatrist following a full assessment.
Considering an ADHD assessment?
Any conversation about medication starts with a diagnosis. Our GMC-registered Consultant Psychiatrists assess adults and children. Assessments are £695 online and £1,095 in person in London or Manchester.
No GP referral needed. Appointments are usually available within weeks.
References
- Attention deficit hyperactivity disorder: diagnosis and management (NG87) National Institute for Health and Care Excellence
- Methylphenidate hydrochloride British National Formulary
- Methylphenidate NHS medicines A to Z
- Yellow Card scheme Medicines and Healthcare products Regulatory Agency
Last reviewed September 2026. Next review due September 2027.
