Medication is not the only treatment for ADHD, but for many adults it is the most significant one. The neurological differences that underlie ADHD — particularly in the dopamine and noradrenaline systems — respond directly to pharmacological treatment in a way that no amount of willpower, organisation systems, or talking therapy can fully replicate.

Understanding your medication options before or after assessment helps you make informed decisions about your own care. This guide covers the main options, how titration works, and what the practical reality of medication management looks like for a private patient in Wales.

The Two Main Categories of ADHD Medication

Stimulant Medications

Stimulant medications are the first-line treatment for ADHD in adults. Despite their name, they don’t cause stimulation in the way a cup of strong coffee does. They work by increasing the availability of dopamine and noradrenaline in the synapses of the prefrontal cortex — improving attention, working memory, impulse control, and emotional regulation.

• Methylphenidate (Ritalin, Concerta, Equasym, Medikinet): the most commonly prescribed stimulant in the UK. Available in short-acting and long-acting formulations. Short-acting versions last 3–5 hours; long-acting versions last 8–12 hours. Most adults do better on long-acting formulations for consistent daytime coverage.
• Lisdexamfetamine (Vyvanse/Elvanse): an amphetamine-based stimulant, typically prescribed when methylphenidate has not been effective or has caused unacceptable side effects. Many adults find it smoother in onset and offset than methylphenidate. Effective for 10–14 hours.
• Dexamfetamine: a shorter-acting amphetamine option, sometimes used in combination with a long-acting medication or when flexibility in dosing is needed.

Non-Stimulant Medications

• Atomoxetine (Strattera): a non-stimulant that increases noradrenaline availability. Takes 4–6 weeks to reach full effect (unlike stimulants, which work immediately). Used when stimulants are contraindicated, cause intolerable side effects, or when there is a significant co-occurring anxiety disorder that stimulants may worsen.
• Guanfacine (Intuniv): an alpha-2 agonist that improves prefrontal cortex function by a different mechanism. Used in adults, particularly when emotional dysregulation or sleep difficulties are prominent, sometimes alongside a stimulant medication.

Common Questions About ADHD Medication

Is ADHD medication addictive?

ADHD medications prescribed at therapeutic doses are not addictive in the sense of creating dependence or withdrawal. If medication is stopped, ADHD symptoms return — but there is no withdrawal syndrome and no physiological craving. People with ADHD are also, at therapeutic doses, at no higher risk of substance misuse from their medication.

What are the common side effects?

The most commonly reported side effects of stimulant medications include reduced appetite (particularly in the first few weeks), mild sleep disturbance if taken too late in the day, and occasionally increased heart rate or blood pressure. Most side effects are manageable through dose adjustment or timing changes. A cardiac screening is conducted before stimulant medication is prescribed.

How quickly does it work?

Stimulant medications begin working within 30–60 minutes of taking them and wear off over the course of their effective window. Most people notice effects from the first dose, though finding the right dose and formulation takes time.

The Titration Process

Titration is the process of finding the right medication and optimal dose for your individual neurology. It typically takes three to six months and involves regular follow-up appointments to:

• Assess how the current medication is working — subjective experience, functionality, side effects
• Adjust dose incrementally until the optimal effect is achieved
• Switch medication if the initial choice is not suitable
• Monitor blood pressure and heart rate

On average, adults at Zenvité require one medication initiation appointment and two to three titration appointments before moving to six-monthly review.

The Shared Care Question in Wales

Following a private diagnosis in Wales, your GP is not obligated to take on prescribing under a shared care agreement. Some GPs are willing to do so; others decline. This is a systemic issue across private ADHD care in Wales and is not specific to Zenvité.

In practical terms, this means some adults continue to manage their prescribing privately. Private ADHD prescriptions are available at registered pharmacies and typically cost between £50 and £120 per month depending on the medication and dose. We discuss this openly with all patients before and after assessment.

→ Explore private ADHD assessment and treatment at Zenvité

Informational purposes only. Not a substitute for clinical advice. ADHD medication requires assessment and prescription by a qualified clinician.

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