ADHD Medication

Medication and ADHD

Medication is one of the most effective treatments for ADHD. It does not cure ADHD - nothing does, because ADHD is not an illness to be cured. But for many people, it can significantly reduce the core symptoms of inattention, hyperactivity, and impulsivity, making daily life more manageable.

Whether to take medication is a personal decision. It is not the right choice for everyone, and prescribing is always individualised based on a thorough clinical assessment. Medication works best alongside other forms of support - self-understanding, practical strategies, therapy, and sometimes workplace or educational adjustments. But for many people, it is transformative.

Types of ADHD medication

ADHD medications fall into two main categories: stimulants and non-stimulants.

Stimulant medications

Stimulants are the first-line treatment for ADHD in the UK. Despite the name, they do not make people “more stimulated” - they work by increasing levels of dopamine and noradrenaline in the brain, which helps improve focus, attention, and impulse control.²

There are two types of stimulant medication used in the UK:

Methylphenidate-based medications are the most commonly prescribed. They are available in short-acting forms (lasting around 3-4 hours, taken 2-3 times a day) and long-acting modified-release forms (lasting 8-12 hours, taken once daily):

• Concerta XL (modified-release methylphenidate)
• Medikinet XL (modified-release methylphenidate)
• Equasym XL (modified-release methylphenidate)
• Delmosart (modified-release methylphenidate)
• Ritalin (short-acting methylphenidate)
• Medikinet (short-acting methylphenidate)

Amphetamine-based medications work in a similar way but through a slightly different mechanism:

• Elvanse (lisdexamfetamine) - a long-acting prodrug that is converted to dextroamphetamine in the body, lasting up to 14 hours
• Amfexa (dexamfetamine) - a short-acting stimulant (lasting around 4-6 hours), sometimes used alongside a long-acting medication to cover the end of the day

Non-stimulant medications

Non-stimulant medications are used when stimulants are not effective, cause unacceptable side effects, or are contraindicated:

• Atomoxetine (Strattera) - a selective noradrenaline reuptake inhibitor. Unlike stimulants, atomoxetine does not work immediately. It typically takes 4-8 weeks to reach full effectiveness, and in some cases longer. It must be taken every day to maintain its effect. It is not a controlled drug. NICE NG87 provides detailed guidance on atomoxetine prescribing and monitoring.
• Guanfacine (Intuniv) - an alpha-2 adrenergic agonist. Currently licensed for children and young people aged 6-17, but sometimes used off-licence in adults. It may be particularly helpful for emotional dysregulation and rejection sensitivity.

What NICE recommends

NICE guideline NG87 sets out the recommended treatment pathway for ADHD medication in the UK:²

For children (aged 5 and over) and young people

• First line: methylphenidate (short or long-acting)
• If methylphenidate is not effective after a 6-week trial at adequate dose: consider switching to lisdexamfetamine
• If neither stimulant is effective: consider atomoxetine or guanfacine

For adults

• First line: lisdexamfetamine or methylphenidate
• If one stimulant is not effective after a 6-week trial: consider switching to the other
• If neither stimulant is effective: consider atomoxetine
• If symptoms remain unresponsive: seek a second opinion or referral to a tertiary service

Starting medication

Before you begin

Before starting ADHD medication, your specialist should carry out a baseline physical health assessment. This typically includes checking your blood pressure and heart rate, reviewing your medical history (including any heart conditions, epilepsy, or mental health conditions), and considering any other medications you are taking. This screening ensures it is safe for you to start treatment.²

Titration

When you start ADHD medication, you begin at a low dose. The dose is then gradually increased - a process called titration - until you and your specialist find the dose that provides the best balance of symptom improvement and manageable side effects.

Titration typically takes 4-8 weeks, though it can take longer. During this period, you will usually have regular contact with your specialist (by phone, video, or in person) to report how you are responding.

What to expect in the first few weeks

The effects of stimulant medication are usually noticeable on the day you take them. You may notice improved focus, clearer thinking, and a sense of calm. Some people describe it as the mental “noise” quieting down.

Not everyone responds to the first medication they try. It is common to need adjustments - a different dose, a different formulation (short-acting versus long-acting), or a different medication entirely. This is a normal part of the process, not a sign that treatment is failing.

Common side effects

Side effects vary by medication but may include:

• Reduced appetite (especially with stimulants)
• Difficulty sleeping if medication is taken too late in the day
• Dry mouth
• Headaches
• Increased heart rate or blood pressure
• Feelings of anxiety or irritability (usually settles as your body adjusts)

Most side effects are mild and often improve within the first few weeks. If side effects are persistent or troublesome, speak to your specialist - adjusting the dose or switching medication often helps.

Ongoing monitoring

Once your medication is stabilised, NICE recommends regular monitoring. Under a Shared Care Agreement, your GP will typically check:²

• Blood pressure and heart rate (at least every 6 months, and after dose changes)
• Weight and height in children and young people
• Overall effectiveness and any side effects
• Mental health - particularly anxiety, low mood, or any concerning changes

Your specialist should review you at least annually to assess whether your treatment remains appropriate.

Important considerations

Controlled drug status

Stimulant ADHD medications (methylphenidate, lisdexamfetamine, dexamfetamine) are Schedule 2 controlled drugs under the Misuse of Drugs Regulations. This means prescriptions must follow specific rules - they can only be issued for a maximum of 30 days at a time, and you may need to collect them in person from the pharmacy.²

Medication shortages

The UK has experienced significant ADHD medication supply issues in recent years, particularly affecting methylphenidate and lisdexamfetamine. If your medication is unavailable, speak to your pharmacist (who may be able to source an alternative brand) and your prescriber (who may be able to switch you to an available formulation).

Medication and pregnancy

If you are pregnant, planning to become pregnant, or breastfeeding, discuss your ADHD medication with your specialist. Some ADHD medications carry risks during pregnancy, and the decision about whether to continue, pause, or change medication should be made jointly with your healthcare team.

Medication is part of a broader support plan

Medication can be highly effective, but it is not a standalone solution. It works best as part of a broader approach to managing ADHD. This may include:

• Understanding your own ADHD patterns and strengths
• Building practical strategies and routines
• Therapy (particularly CBT adapted for ADHD)
• Coaching for ADHD-specific challenges
• Workplace or educational adjustments
• Peer support and community connection

The goal of treatment is not to “fix” ADHD but to reduce the barriers it creates, so you can build a life that works for you.

Getting support

For more information on ADHD medication

• NICE guideline NG87 - the full clinical guideline for ADHD diagnosis and management
• ADHD UK - information on medication, shared care, and access to treatment
• Psychiatry-UK - detailed medication information from a leading ADHD service

neurobetter resources

• ADHD - understanding ADHD as a whole
• Shared Care Agreements - how ongoing prescribing works
• Getting assessed - the assessment process
• Right to Choose - choosing your assessment and treatment provider
• Emotional dysregulation - managing intense emotions with or without medication
• Our Local Services directory - find ADHD services near you
• Our online community - connect with others who understand
• Ask a Counsellor - private, confidential guidance