If your child has been diagnosed with ADHD, you may have questions about whether medication is appropriate, what benefits you might notice and which side effects you should watch for. Medication can reduce significant ADHD symptoms for some children, but it is not automatically needed simply because your child has received a diagnosis.
Your child’s treatment should be individualised. ADHD medication should be initiated and adjusted by a healthcare professional with training and expertise in ADHD, with ongoing prescribing and monitoring potentially continuing under an agreed shared-care arrangement once treatment is stabilised. You and your child should be involved in discussing the expected benefits, possible side effects, alternatives and how you will decide whether treatment is helping.
When Is ADHD Medication Considered for Children?
If your child is aged 5 or over, NICE recommends offering medication only when their ADHD symptoms continue to cause persistent significant impairment in at least one important area of everyday life after appropriate environmental modifications have been implemented and reviewed. You and your child should also have received information about ADHD, discussed the available treatment options and completed an appropriate baseline assessment before medication begins.
If your child is under 5, NICE recommends an ADHD-focused group parent-training programme as first-line treatment. Medication should not be offered to a child under 5 without a second specialist opinion from an ADHD service with expertise in managing ADHD in young children, ideally a tertiary service.
How Does ADHD Medication Work?
ADHD medicines affect brain chemicals involved in areas such as attention, activity and impulse control, although different medicines work in different ways. Your child’s healthcare professional will consider their individual needs when deciding which medicine, if any, may be suitable.
The aim of ADHD medication is not to change your child’s personality but to reduce troublesome symptoms. This may help your child manage everyday activities more easily, including concentrating, following instructions and controlling impulsive behaviour.
What Are Stimulant ADHD Medicines?
Stimulant ADHD medicines used in children include methylphenidate, lisdexamfetamine and, in more specific circumstances, dexamfetamine. The medicine and formulation selected will depend on your child’s age, symptoms, response to previous treatment, possible side effects and individual circumstances.
When medication is appropriate for a child aged 5 or over, NICE recommends methylphenidate as the first-line pharmacological treatment. The marketing authorisation can differ according to the medicine, formulation and your child’s age, so your prescriber should explain if a recommended treatment is being used outside its specific UK licence.
What Is Methylphenidate?
Methylphenidate is available in shorter-acting and longer-acting preparations, which can allow treatment to be adapted to your child’s individual needs and daily routine. The most suitable option may depend on factors such as when your child’s symptoms are most difficult to manage and how long support is needed during the day.
Your specialist will decide which preparation and dose are appropriate for your child. They can then adjust the treatment according to the benefits your child experiences and any unwanted effects that may develop.
Can Different Methylphenidate Brands Be Switched?
Different long-acting methylphenidate preparations do not necessarily work in exactly the same way. Products can differ in how quickly methylphenidate is released, how long its effects last and whether the medicine needs to be taken with or without food.
If your child’s long-acting methylphenidate brand or manufacturer changes, check the instructions carefully and report unexpected changes in symptom control or side effects to their prescriber or pharmacist. Switching between different modified-release preparations should be approached cautiously because their release profiles and dosing instructions can differ.
What Is Lisdexamfetamine?
If your child aged 5 or over has taken methylphenidate at an adequate dose for six weeks without enough improvement in their ADHD symptoms and associated impairment, NICE recommends considering a switch to lisdexamfetamine.
Your specialist will assess how much benefit your child received, whether side effects occurred and whether the methylphenidate trial was adequate before recommending a change. Your child’s dose should then be individually adjusted according to effectiveness and tolerability.
What Is Dexamfetamine?
Dexamfetamine may be considered if your child responds well to lisdexamfetamine but cannot tolerate its longer duration of effect. It is not normally the first stimulant your child will be offered.
Your specialist should explain why dexamfetamine is being considered and whether its licensed indication applies to your child’s age and treatment history. You should follow the exact preparation and dosing instructions you are given.
Are There Non-Stimulant ADHD Medicines?
Atomoxetine and guanfacine are non-stimulant medicines that may be considered for your child when stimulant treatment is unsuitable or not tolerated. NICE also recommends considering them when your child has not responded adequately to separate six-week trials of methylphenidate and lisdexamfetamine at suitable doses.
These medicines have different side-effect profiles. Atomoxetine requires attention to changes in mood as well as cardiovascular effects, while guanfacine can cause sleepiness, reduced blood pressure, a slower heart rate or fainting in some children. Your specialist should explain which risks are relevant to the medicine prescribed for your child.
What Benefits Can ADHD Medication Provide?
When ADHD medication works well, you may notice improvements in your child’s ability to concentrate, manage impulsive behaviour and cope with activities that previously felt difficult. Your child may find it easier to follow instructions, complete tasks and manage everyday routines at home or school.
The degree of improvement varies between children, so your specialist will review how your child is actually functioning rather than assuming the medication will work in the same way for everyone. Their response, progress and any unwanted effects can help guide decisions about continuing or adjusting treatment.
What Are the Common Side Effects?
Your child’s possible side effects depend on which ADHD medicine they take. Reduced appetite, headaches, abdominal symptoms and sleep difficulties can occur with stimulant treatment, while non-stimulants have their own patterns of unwanted effects.
You should tell your specialist about side effects that persist, interfere with daily activities or concern you. Your prescriber may adjust the dose, timing, preparation or medicine, but you should not make these changes independently.
How Can Side Effects Differ Between Medicines?
| Your Child’s Medicine | What You May Notice | What You Should Know |
| Methylphenidate | Your child may experience reduced appetite, sleep difficulties, headache or stomach symptoms | Your child’s pulse, blood pressure, growth and behavioural response should be monitored |
| Lisdexamfetamine or dexamfetamine | Your child may experience appetite loss, sleep problems, headache or other stimulant effects | You should report significant mood, cardiovascular or behavioural changes |
| Atomoxetine | Your child may experience appetite or gastrointestinal changes, sleepiness or sleep changes | You should seek prompt professional advice about significant mood changes, suicidal thoughts or new thoughts of self-harm |
| Guanfacine | Your child may become sleepy, tired or dizzy and may develop low blood pressure or a slower pulse | You should report fainting or persistent dizziness and should not stop guanfacine suddenly without advice |
Can ADHD Medication Affect Appetite and Weight?
Some ADHD medicines can reduce your child’s appetite and influence their weight. NICE recommends measuring your child’s height every six months and plotting their height and weight on a growth chart. If your child is aged 10 or under, their weight should normally be measured every three months.
If your child is over 10, NICE recommends checking their weight three and six months after medication starts and every six months afterwards, or more often if there is concern. If your child loses concerning amounts of weight, their specialist may review meal timing, diet, dose, planned treatment breaks or a change of medication rather than you altering treatment yourself.
Can ADHD Medication Affect Sleep?
Some children may find it harder to fall asleep while taking ADHD medication, particularly when using stimulant medicines. If you notice a noticeable change in your child’s sleep, it is worth discussing this with their specialist rather than making changes to the medication yourself.
Your child’s specialist may review the dose, formulation or timing of the medicine to see whether adjustments could help. The aim is to find a balance between managing ADHD symptoms effectively and reducing unwanted effects on your child’s sleep.
Are There Cardiovascular Considerations?
Before medication starts, your child should have their pulse and blood pressure measured and compared with the normal range for their age, together with an appropriate cardiovascular history and examination. Your specialist should ask about relevant heart problems and family history and refer for further assessment when specific risk factors are present.
Your child does not routinely need an ECG before stimulant, atomoxetine or guanfacine treatment when their cardiovascular history and examination are normal and there is no other clinical indication. During treatment, their heart rate and blood pressure should be checked before and after each dose change and at least every six months.
What Happens Before Medication Is Started?
Before prescribing medication, your specialist should confirm that your child continues to meet ADHD criteria and that medication is clinically appropriate. Their baseline assessment should consider their mental health, other neurodevelopmental conditions, current medicines, education and social circumstances, possible misuse or diversion risk where relevant and their physical health.
Your child’s height, weight, pulse and blood pressure should be recorded, and they should receive an appropriate cardiovascular assessment. You and your child should also understand the aims of treatment, possible adverse effects and how the response will be reviewed.
How Is Your Child Monitored During Treatment?
During dose titration, your child’s ADHD symptoms, functioning and adverse effects should be reviewed as the dose changes. Once treatment is established, monitoring should continue according to your child’s needs, including their growth, pulse, blood pressure, sleep, behaviour and any medicine-specific side effects.
NICE does not recommend routine ECGs or blood tests simply because your child is taking ADHD medication unless there is a clinical reason. Their medication should also receive a comprehensive review at least once every year to consider benefits, side effects, continued need and whether a dose reduction or trial without medication should be discussed.
When Should You Seek Urgent Medical Advice?
You should seek prompt medical advice if your child develops fainting, persistent palpitations, significant chest symptoms, a new or worsening seizure, hallucinations, marked agitation or an important deterioration in their mood or behaviour. If your child takes atomoxetine, you should seek urgent professional help if they develop new or worsening thoughts about self-harm or suicide.
You should call 999 if your child collapses, becomes unresponsive, has severe difficulty breathing, develops a severe allergic reaction, has a serious seizure or appears to be in immediate danger. You should tell the healthcare team which ADHD medicine your child takes and when their most recent dose was.
Can You Stop or Change Your Child’s Medication Yourself?
You should discuss stopping, reducing or switching your child’s ADHD medication with their prescriber. Different medicines need different approaches, and your specialist should consider the benefits your child is receiving as well as possible withdrawal or recurrence of symptoms.
You should be particularly careful not to stop guanfacine suddenly without medical advice because your child’s blood pressure and pulse can increase after abrupt discontinuation. Your specialist can provide an appropriate dose-reduction plan when guanfacine needs to be stopped.
Myth vs Fact
| Myth | What You Should Know |
| Your child automatically needs medication after an ADHD diagnosis. | Your child’s treatment depends on their age, impairment, circumstances and response to other support. |
| Your child under 5 should usually start with medication. | Your child under 5 should normally receive ADHD-focused parent-training support first. |
| Your child’s medication should change their personality. | Your treatment aims to reduce impairing ADHD symptoms rather than change who your child is. |
| Your child needs an ECG before any ADHD medication. | Your child does not routinely need one when their cardiovascular history and examination are normal and there is no other indication. |
| Your child’s weight only needs checking if you notice a problem. | Your child requires scheduled growth monitoring while taking ADHD medication. |
| Every long-acting methylphenidate product works identically. | Your child may experience differences because formulations have different release profiles and instructions. |
| You can stop your child’s medicine as soon as side effects appear. | You should obtain professional advice because the safest approach depends on the medicine and severity of the problem. |
| Your child can stop guanfacine suddenly. | Your child usually requires a planned reduction because abrupt withdrawal can increase blood pressure and pulse. |
| Your child should stay on medication indefinitely once it works. | Your child’s continuing need for medication should be formally reviewed at least annually. |
Key Takeaways
- Your child does not automatically need medication after an ADHD diagnosis.
- Your child under 5 should normally receive ADHD-focused parent-training support before medication is considered.
- Your child aged 5 or over may be offered medication when significant impairment continues despite appropriate environmental changes.
- Your child will usually be offered methylphenidate first when medication is appropriate.
- Your child should have physical-health and cardiovascular checks before starting medication.
- Your child does not routinely need an ECG when their cardiovascular assessment is normal and there is no other clinical indication.
- Your child’s height, weight, pulse and blood pressure require ongoing monitoring during treatment.
- Your child’s side effects will depend partly on the medicine they take.
- You should not change, stop or switch your child’s medication without discussing it with their prescriber.
- Your child’s medication should be reviewed at least annually to determine whether it remains appropriate.
UK Guidance Note
In the UK, your child’s ADHD medication should be started by a healthcare professional with training and expertise in diagnosing and managing ADHD. Once your child’s dose has been appropriately adjusted and stabilised, ongoing prescribing and monitoring may take place through an agreed shared-care arrangement when this is available locally.
You should also be aware that NICE recommendations and individual medicine licences are not always identical, particularly for children aged 5. If a medicine is being prescribed outside its marketing authorisation for your child, your prescriber should explain why it is considered appropriate.
Frequently Asked Questions
1. When may ADHD medication be considered for your child?
If your child is aged 5 or over, medication may be offered when ADHD continues to cause persistent significant impairment despite appropriate environmental modifications. Your child under 5 normally follows a different pathway, with ADHD-focused parent training used first.
2. Which ADHD medication is usually offered to your child first?
NICE recommends methylphenidate as the first-line pharmacological treatment for your child aged 5 or over when medication is appropriate. Your specialist should select the preparation according to your child’s individual needs.
3. When might your child change from methylphenidate to lisdexamfetamine?
Your specialist may consider lisdexamfetamine when your child has completed a six-week trial of methylphenidate at an adequate dose without enough improvement in ADHD symptoms and associated impairment.
4. Will ADHD medication change your child’s personality?
It should not be the aim of treatment. Your child’s medication is intended to reduce impairing ADHD symptoms, and you should report marked emotional, behavioural or personality changes to their specialist.
5. Which side effects may your child experience?
Your child’s side effects depend on the medicine. Possible problems include reduced appetite, sleep changes, headache, abdominal symptoms, tiredness and changes in blood pressure or heart rate.
6. Can ADHD medication affect your child’s growth?
Your child’s appetite and weight may be affected by some ADHD medicines, which is why scheduled height and weight monitoring is recommended. Your specialist should review treatment if your child’s growth becomes a clinical concern.
7. Does your child need heart tests before ADHD medication?
Your child needs an appropriate cardiovascular history, examination, pulse and blood-pressure measurement. They do not routinely need an ECG when this assessment is normal and there is no other clinical indication.
8. How often should your child’s medication be monitored?
Your child needs monitoring during dose adjustment and continued follow-up after treatment stabilises. Their blood pressure and pulse should normally be checked after dose changes and every six months, while growth monitoring follows age-specific NICE intervals.
9. Can you stop your child’s ADHD medication yourself?
You should discuss stopping or reducing medication with your child’s prescriber. This is particularly important with guanfacine because suddenly stopping it can cause your child’s blood pressure and pulse to increase.
10. Does your child need an annual ADHD medication review?
Yes. Your child’s medication should be reviewed at least once a year to consider how well it is working, adverse effects, their preferences, continuing clinical need and whether treatment should be changed or continued.
Final Thoughts: Making Informed Decisions About ADHD Medication
ADHD medication can reduce significant symptoms for some children, but your child’s treatment needs to be individually chosen, carefully adjusted and regularly monitored. You should understand what improvement you are hoping to see, which side effects to watch for and which physical-health checks your child requires. If you’re considering ADHD treatment for children, you can get in touch with us at London Paediatric Clinic.
References:
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