Elvanse (Lisdexamfetamine) for ADHD: What UK Patients Should Know

You have the prescription, or you are close to getting one. Somewhere between the appointment and now, a lot of questions have piled up. How will it feel? What is a normal side effect and what is not? Why does the dose keep changing? And why does collecting it seem harder than collecting anything else you have ever been prescribed?

Most people search for answers late at night, after the appointment has finished and the questions have arrived. They find forum threads, half-remembered advice from friends, and pages that either say too little or try to sell something before they explain anything.

This guide does the opposite. It sets out what Elvanse is, how it works, the doses used in the UK, the side effects listed in the official product information, the rules that apply because it is a controlled drug, and how to get your prescription dispensed without the usual friction. Everything clinical here comes from the official UK product information or national guidance, and it has been reviewed by a GPhC-registered pharmacist.

None of it replaces your prescriber. But you should not have to piece this together on your own.

what is Elvanse? Elvanse is the UK brand name for lisdexamfetamine dimesylate, a once-daily, prescription-only stimulant medicine used to treat ADHD in children aged 6 and over and in adults. It is an inactive "prodrug" that the body converts into dexamfetamine. Capsules come in 20mg, 30mg, 40mg, 50mg, 60mg and 70mg strengths, and the maximum licensed dose is 70mg a day. It is a Schedule 2 controlled drug in the UK.

Elvanse at a Glance

Active ingredient	Lisdexamfetamine dimesylate
Same medicine as	Vyvanse (the US and Canadian brand name)
Used for	ADHD, as part of a wider treatment programme
Licensed for	Children aged 6 and over, and adults
Strengths	20mg, 30mg, 40mg, 50mg, 60mg, 70mg capsules
Usual starting dose	30mg once in the morning (sometimes 20mg)
Maximum dose	70mg a day
How long effects last	Still measurable at 13 hours in children and 14 hours in adults in clinical studies
Legal status	Prescription-only medicine, Schedule 2 controlled drug
Manufacturer	Takeda UK Limited

What Is Elvanse (Lisdexamfetamine)?

Elvanse is a brand of lisdexamfetamine dimesylate, a central nervous system stimulant used to treat attention deficit hyperactivity disorder (ADHD). In the UK it is made by Takeda and is only available on prescription.

Is Elvanse the same as Vyvanse?

Yes. Elvanse and Vyvanse contain the same active ingredient, lisdexamfetamine. Elvanse is the name used in the UK and much of Europe, and Vyvanse is the name used in the United States and Canada. If you are reading American articles or forums, they are talking about the same medicine. However, licensed uses can differ between countries, so always rely on UK product information for how it should be used here in the UK.

What happened to Elvanse Adult?

Until recently, adults in the UK were often prescribed a product called "Elvanse Adult". The electronic Medicines Compendium (emc) now lists the Elvanse Adult capsules as discontinued. The standard Elvanse capsules are licensed for both children aged 6 and over and adults. If your prescription or packaging has changed from "Elvanse Adult" to "Elvanse", the active ingredient is the same. If you are unsure, ask your pharmacist to confirm what has been dispensed.

How Does Lisdexamfetamine Work?

Lisdexamfetamine is a prodrug. The capsule itself contains an inactive form of the medicine: dexamfetamine bonded to an amino acid called l-lysine. After you swallow it, the medicine is absorbed and then broken down, mainly by enzymes in your red blood cells, into dexamfetamine and l-lysine. Dexamfetamine is the active part.

Dexamfetamine increases the activity of two brain chemicals, noradrenaline and dopamine. It does this by blocking their reuptake and increasing their release. These chemicals are involved in attention, focus and impulse control.

Because the conversion happens gradually in the bloodstream, the effect builds steadily rather than all at once. This is one reason Elvanse is taken once a day. According to the official UK product information:

• Lisdexamfetamine itself reaches its highest level in the blood around 1 hour after a dose
• The active dexamfetamine peaks at around 3.5 hours (measured in children)
• Dexamfetamine has a half-life of around 11 hours
• In clinical studies, effects were still present 13 hours after a morning dose in children and 14 hours after a morning dose in adults
• Lisdexamfetamine is not broken down by the liver's cytochrome P450 enzymes, which are involved in many drug interactions

Food can delay the peak by about an hour, but it does not reduce how much medicine is absorbed overall.

Who Is Elvanse Licensed For in the UK?

The UK licence sets out two groups.

Children aged 6 and over: Elvanse is licensed as part of a wider ADHD treatment programme when the response to previous methylphenidate treatment is considered clinically inadequate. In other words, children usually try methylphenidate first.

Adults: Elvanse is licensed as part of a wider ADHD treatment programme in adults whose ADHD symptoms were already present in childhood. The product information states that symptoms should be at least moderate and should cause problems in more than one area of life.

NICE guideline NG87 sets out how ADHD medicines should be used in England. In broad terms, methylphenidate is recommended first for children aged 5 and over, with lisdexamfetamine considered if a methylphenidate trial has not helped enough. For adults, lisdexamfetamine and methylphenidate are both first-line options.

Elvanse is not licensed for children under 6. It is also worth knowing that in the US, Vyvanse has an additional licence for binge eating disorder. That use is not part of the UK licence for Elvanse.

Elvanse Doses and Strengths

What strengths does Elvanse come in?

Elvanse capsules come in six strengths. The colour helps you check you have been given the right one.

Strength	Capsule appearance
20mg	Ivory body and ivory cap
30mg	White body and pink cap
40mg	White body and blue-green cap
50mg	White body and blue cap
60mg	Aqua blue body and aqua blue cap
70mg	Blue body and pink cap

Source: Elvanse Patient Information Leaflet (emc). If your capsules do not match the strength on your label, speak to your pharmacist before taking them.

What is the usual dose of Elvanse?

Your prescriber decides your dose. The UK product information sets out the following:

• Starting dose: 30mg once a day in the morning. Some prescribers start at 20mg if they think a lower dose is more suitable.
• Adjusting the dose: the dose may be increased by 10mg or 20mg at roughly weekly intervals.
• Maximum dose: 70mg a day. Higher doses have not been studied.
• Severe kidney problems: the maximum dose is 50mg a day.
• Older adults: the dose may need adjusting because the body clears dexamfetamine more slowly.

Do not change your dose yourself, even if you feel it is too strong or not strong enough. Tell your prescriber how you are getting on, and they will decide whether a change is needed.

What is titration?

Titration is the process of finding the right dose for you. You start low, and your prescriber reviews how you are doing, including any side effects, your blood pressure and heart rate, before deciding whether to increase the dose. This usually happens over several weeks.

It is normal for the first dose not to be the final dose. Many people find titration frustrating because it takes time, but the step-by-step approach is how prescribers balance benefit against side effects. Keep notes on how you feel each week, including sleep, appetite, mood and focus. Those notes make your review appointments far more useful.

How to Take Elvanse

• Take it once a day, in the morning. The product information advises avoiding afternoon doses because Elvanse can cause sleeping problems.
• With or without food. Either is fine.
• Swallow the capsule whole, or open it. If swallowing capsules is difficult, you can open the capsule and mix all of the contents with a soft food such as yoghurt, or stir it into a glass of water or orange juice. Eat or drink all of it straight away, and do not store the mixture for later.
• If you forget a dose, do not take a double dose. The leaflet advises waiting until the next day.
• If you take too much, talk to a doctor or call an ambulance straight away, and tell them how much was taken.
• Do not stop suddenly without advice. ADHD symptoms can come back. Speak to your prescriber first.

Store Elvanse below 25°C, out of sight and reach of children, and somewhere secure. Because it is a controlled drug, it should never be shared with anyone else.

How Long Does Elvanse Take to Work, and How Long Does It Last?

Elvanse starts to work on the day you take it. It does not need weeks to build up in the way some non-stimulant ADHD medicines do. However, finding the dose that works best for you usually takes several weeks of titration.

In clinical studies, effects were still measurable 13 hours after a morning dose in children and 14 hours in adults. How long it feels like it lasts varies between individuals. Some people notice the effect wearing off in the late afternoon or evening. If this happens to you regularly, mention it at your review rather than taking an extra dose.

Elvanse Side Effects

Like all medicines, Elvanse can cause side effects, although not everybody gets them. Many are most noticeable when you first start or after a dose increase.

Very common side effects (more than 1 in 10 people)

These are listed for both children and adults in the UK product information:

• Decreased appetite
• Difficulty sleeping (insomnia)
• Headache
• Dry mouth
• Upper stomach pain
• Weight loss

Common side effects in adults (up to 1 in 10 people)

• Agitation, anxiety, mood swings, irritability
• Restlessness, feeling jittery, tremor, dizziness
• Teeth grinding (bruxism)
• Faster heartbeat or palpitations
• Raised blood pressure
• Diarrhoea, constipation or nausea
• Tiredness, excessive sweating, chest pain

Children and adolescents can have a slightly different pattern of common side effects, including tics, low mood, nausea, vomiting, tiredness, fever and rash. Your child's prescriber will talk you through what to watch for.

When to get urgent medical help

Contact a doctor straight away, or call 999, if you or your child has:

• Chest pain, an uneven or racing heartbeat
• Fainting, or signs of a stroke
• Hallucinations, feeling unusually suspicious, or extreme high mood (mania)
• A seizure (fit)
• New or worsening tics
• Signs of an allergic reaction, such as swelling of the face or difficulty breathing, or a severe skin reaction

This is not a full list. The Patient Information Leaflet in your pack lists all known side effects. You can also report suspected side effects through the MHRA Yellow Card scheme.

Managing common side effects

These are general tips. Speak to your prescriber or pharmacist if a side effect is bothering you.

• Reduced appetite: eat a good breakfast before the medicine takes full effect, and keep easy snacks available. Your weight will be checked as part of monitoring.
• Sleep problems: take your dose as early in the morning as you can, and keep a regular bedtime routine.
• Dry mouth: sip water through the day and choose sugar-free gum or sweets.
• Feeling low or irritable as it wears off: note when it happens and mention it at your review. A change in timing or dose may help.

Who Should Not Take Elvanse?

According to the UK product information, Elvanse must not be used by people who:

• Are allergic to stimulant medicines (sympathomimetic amines) or any ingredient in the capsule
• Are taking a monoamine oxidase inhibitor (MAOI) antidepressant, or have taken one in the last 14 days
• Have an overactive thyroid (hyperthyroidism or thyrotoxicosis)
• Are in an agitated state
• Have symptomatic heart disease or advanced hardening of the arteries
• Have moderate to severe high blood pressure
• Have glaucoma
• Have a phaeochromocytoma (a rare adrenal gland tumour)

The product information also asks prescribers to take extra care in people with a history of heart problems, mental health conditions such as psychosis or bipolar disorder, seizures, tics or Tourette's syndrome, or substance misuse. Tell your prescriber if any of these apply to you, or if anyone in your family has had a sudden unexplained death or heart rhythm problem.

Elvanse and Other Medicines

Always tell your prescriber and pharmacist about every medicine you take, including those bought without a prescription. Key interactions in the product information include:

• MAOI antidepressants: must not be taken together, or within 14 days of each other, because of the risk of a dangerous rise in blood pressure
• Serotonergic medicines, including SSRI antidepressants: serotonin syndrome has rarely been reported
• Medicines that change urine acidity: large amounts of vitamin C (ascorbic acid) can shorten the effect of the medicine, and sodium bicarbonate (found in some indigestion remedies) can lengthen it

Lisdexamfetamine is not broken down by cytochrome P450 liver enzymes, so it has fewer of the liver-related interactions seen with some other medicines.

Monitoring While Taking Elvanse

Before you start, and regularly during treatment, your prescriber will check:

• Blood pressure and heart rate
• Weight, and height in children and teenagers
• Appetite
• Mood and mental wellbeing

The Patient Information Leaflet says these checks happen before treatment and at least every 6 months afterwards, with height and weight in children checked every 6 months. Your prescriber may also check after each dose change. The product information also advises reviewing whether Elvanse is still needed at least once a year, which can include a planned break from treatment.

Pregnancy, Breastfeeding and Driving

Pregnancy and breastfeeding

Dexamfetamine crosses the placenta. The product information states Elvanse should only be used in pregnancy if the potential benefit justifies the potential risk. It should not be used while breastfeeding, because amfetamines pass into breast milk. If you are pregnant, planning a pregnancy or breastfeeding, speak to your prescriber before your next dose.

Can I drive while taking Elvanse?

Elvanse can cause dizziness, drowsiness and blurred vision, which can affect your ability to drive. Do not drive until you know how it affects you. In the UK, it is an offence to drive if a medicine impairs your driving. There is a legal defence if you are taking a prescribed medicine as directed and it is not affecting your driving. Many people choose to keep evidence of their prescription with them when driving.

Elvanse Compared With Other ADHD Medicines

Your prescriber will choose the medicine that suits you, based on your age, history and how you respond. This table shows how Elvanse relates to other ADHD medicines commonly used in the UK.

Medicine	Type	Controlled drug?	How it is taken
Elvanse (lisdexamfetamine)	Stimulant (prodrug of dexamfetamine)	Yes, Schedule 2	Once daily, morning
Methylphenidate, immediate-release	Stimulant	Yes, Schedule 2	Usually more than once a day
Methylphenidate, modified-release (e.g. Concerta XL)	Stimulant	Yes, Schedule 2	Once daily, morning
Dexamfetamine (e.g. Amfexa)	Stimulant	Yes, Schedule 2	Usually more than once a day
Atomoxetine	Non-stimulant	No	Daily
Guanfacine (Intuniv)	Non-stimulant	No	Once daily

Elvanse vs dexamfetamine: both deliver dexamfetamine to the body. The difference is that Elvanse releases it gradually as the prodrug is converted in the blood, so it is taken once a day. The product information notes that this design does not remove the potential for misuse.

Elvanse vs methylphenidate: they are different stimulants that work in slightly different ways. Some people respond better to one than the other. For children, methylphenidate is usually tried first.

Why Elvanse Is a Controlled Drug, and What That Means for Your Prescription

Elvanse is a Schedule 2 controlled drug under the Misuse of Drugs Regulations 2001. Stimulant medicines can be misused, and the product information notes the risk is greater in adults, especially young adults. Because of this, extra legal rules apply to how it is prescribed, dispensed and supplied.

In practice, this means:

• Prescriptions are valid for 28 days from the date on the prescription. After that, the pharmacy cannot dispense it and you will need a new one.
• Supply is usually limited to 30 days at a time, in line with Department of Health and Social Care guidance.
• No repeat dispensing. Each supply needs its own prescription.
• Private prescriptions must be written on the standard private controlled drug form, including the prescriber's private prescriber identification number.
• The pharmacy must carry out extra checks before dispensing, which is why controlled drug prescriptions can take slightly longer than routine ones.

This is why collecting Elvanse can feel more complicated than other medicines. It is not the pharmacy being difficult. These are legal requirements, and a well-organised pharmacy will explain them and help you plan around them.

How Much Does Elvanse Cost in the UK?

On the NHS: if Elvanse is prescribed on the NHS, you pay the standard prescription charge in England, unless you are exempt. Prescriptions are free in Scotland, Wales and Northern Ireland.

Privately: if you have a private prescription, you pay for the medicine itself. At Pharmazon HomeCare, Elvanse capsules start from £74.79 per pack. The price varies by strength and pack size, and a valid prescription is required.

Private prescriber or clinic fees are separate from the cost of the medicine, and vary between providers. Ask your clinic for these before you start.

Why Pharmazon HomeCare: Clear, upfront medicine pricing, with your prescription checked by a GPhC-registered pharmacist before anything is dispensed. Get in touch with our pharmacy team for a current price on your strength.

Elvanse Availability and Shortages

Supply of ADHD medicines, including lisdexamfetamine, has varied across the UK in recent years. Availability can change because of manufacturing, distribution and demand, and it can differ from one pharmacy to the next.

If your usual pharmacy cannot supply your Elvanse:

• Contact the pharmacy to ask when stock is expected, or whether another pharmacy can help (our guide to Elvanse stock in London explains why stock varies)
• Speak to your prescriber if a gap in treatment looks likely
• Do not change your medicine, strength or how you take it without advice
• Never buy Elvanse, Vyvanse or any stimulant from a website, social media seller or anyone without a valid prescription. These products cannot be checked for safety, may be counterfeit, and buying them is illegal

Pharmazon HomeCare cannot guarantee stock of any specific strength at any time. What we can do is tell you clearly where things stand once we have your prescription, so you can plan with your prescriber.

How to Get Your Elvanse Prescription Dispensed by Pharmazon HomeCare

Pharmazon HomeCare is a GPhC-registered ADHD online pharmacy and part of the Excelsior Health group, with over 30 years of pharmaceutical experience. Our London office is at 8 Devonshire, London W1G 6HP, in the Harley Street Medical Area, and we work with patients, GPs, psychiatrists and private ADHD clinics across the UK.

We dispense prescriptions. We do not assess or diagnose ADHD.

How it works:

1. Your prescriber issues a valid prescription. This can come from your GP, a consultant psychiatrist, or a private ADHD clinic.
2. The prescription reaches us. Clinics can send it to us directly. For private controlled drug prescriptions, we need the original paper prescription.
3. A pharmacist checks it. Every Elvanse prescription is checked by a GPhC-registered pharmacist against the legal requirements for controlled drugs.
4. We confirm stock and price, and contact you if there is a query.
5. Your medicine is delivered. Tracked, signed-for delivery in discreet, unbranded packaging, with same-day delivery available in London and next-day delivery across the UK for eligible orders. See our ADHD medication delivery page.

Why Pharmazon HomeCare: Controlled drug prescriptions are handled under pharmacist-led oversight from start to finish, with same-day London delivery and discreet packaging. Get in touch with our pharmacy team to arrange your Elvanse prescription.

The Bottom Line

Most people who come to us with an Elvanse prescription say a version of the same thing. They did not need more information. They needed someone to put it in order.

Now you know what the medicine is, how it works, what the doses mean, which side effects to expect and which to act on, and why the prescription rules are stricter than usual. The rest is practical. Keep your notes during titration. Keep talking to your prescriber. And choose a pharmacy that explains things before you have to ask.

If you have a prescription for Elvanse and want it dispensed by pharmacists who handle ADHD medicines every day, from our Harley Street area team, we are here to help.

Get in touch with our pharmacy team to arrange your Elvanse prescription.