Atomoxetine (e.g., Strattera®) — Patient Information (Australia)

Atomoxetine is a prescription medicine used to treat Attention-Deficit/Hyperactivity Disorder (ADHD) in children, adolescents and adults. It is different from stimulant medicines and may be an option when stimulants are not suitable, not tolerated, or not preferred.

This page provides patient-friendly information about how atomoxetine works, how it is taken, important safety considerations, and practical tips. If you have questions about your specific situation, speak with your doctor or pharmacist.

Basic product information

How atomoxetine works (mechanism of action)

Atomoxetine helps improve ADHD symptoms by affecting brain chemicals involved in attention and self-control. It is a selective norepinephrine reuptake inhibitor. In practical terms:

• It increases norepinephrine activity in certain brain pathways by blocking its reuptake.
• This can improve focus, impulsivity, and hyperactivity in some people.
• Unlike many stimulant ADHD medicines, atomoxetine is generally considered a non-stimulant option.

Pharmacokinetics (how your body handles it)

Pharmacokinetics describes what happens to a medicine after it’s taken—absorption, distribution, metabolism, and elimination. The main points for atomoxetine include:

• Absorption: Atomoxetine is absorbed after oral dosing.
• Peak levels: Blood levels typically peak a few hours after dosing (timing can vary by individual).
• Metabolism: It is primarily metabolised in the liver, mainly by the enzyme CYP2D6. People differ genetically in CYP2D6 activity; this can affect blood levels and side-effect risk.
• Half-life: The time it takes for the body to reduce the medicine concentration by half differs between individuals. Some people metabolise it faster, others more slowly.
• Elimination: Metabolites are excreted mainly through urine.

Because of these variations, your prescriber may adjust dose and monitor response, especially if you take medicines that affect CYP2D6.

Typical use and timing

Atomoxetine is usually taken as a daily long-term treatment for ADHD. It is not a “take as needed” medicine.

When will it start working?

Many people notice improvement within the first few weeks, but effects can take longer. A common pattern is:

• Early changes: may appear after 1–2 weeks for some people.
• Full benefit: may require several weeks of consistent use.
• Dose adjustments: might be made gradually based on tolerance and symptom control.

What time of day to take it?

Dosing schedule depends on your dose and your prescriber’s plan. Common approaches include:

• Once daily: often taken in the morning if it causes sleep disturbance in some people, or evening if daytime sedation occurs (follow your plan).
• Two divided doses: sometimes used to reduce side effects or improve symptom control throughout the day.

If you miss a dose, take it when you remember unless it’s close to the time for the next dose. Avoid doubling up. If you’re unsure, ask a pharmacist.

Food interactions

Atomoxetine can generally be taken with or without food. However, individual products may have specific directions. Consider the following:

• Take consistently: Choose a routine (with food or without) and stick to it to help maintain steady absorption.
• Stomach upset: If you experience nausea or stomach discomfort, taking it with food may help.
• Gastrointestinal effects: Common early side effects include nausea, reduced appetite, or constipation in some people.

Alcohol and medicine interactions

Alcohol

It’s best to limit alcohol while taking atomoxetine. Alcohol can:

• Increase dizziness or drowsiness for some people.
• Worsen mood or sleep, potentially making ADHD-related challenges harder to manage.
• Increase risk to the liver when combined with medications that are metabolised in the liver.

If you plan to drink alcohol, discuss what is safe for you with your doctor or pharmacist—especially if you have liver conditions or mood concerns.

Common medicine interactions

Atomoxetine can interact with other medicines, particularly those affecting CYP2D6 or those that influence mood, blood pressure, or heart rate. Tell your pharmacist and doctor about:

• Antidepressants (including some SSRIs/SNRIs or tricyclics)
• Antipsychotics and certain mood-stabilising medicines
• Quinidine (a CYP2D6 inhibitor) and other strong inhibitors
• Some cough/cold or allergy medicines containing ingredients that may affect sedation
• Blood pressure medicines or drugs affecting heart rhythm
• Other ADHD medications (if used alongside) including stimulants
• Herbal products (e.g., supplements) and non-prescription medicines

Interactions may change atomoxetine levels in the body and increase side effects. Your clinician may start at a lower dose or monitor more closely if you’re on interacting medications.

Indications (what atomoxetine is used for)

Atomoxetine is indicated for the treatment of ADHD. It may be used in:

• Children and adolescents diagnosed with ADHD
• Adults with ADHD

Atomoxetine may be considered when:

• Stimulant medicines are not suitable, not tolerated, or ineffective
• A non-stimulant option is preferred
• The person has certain co-existing needs where a gradual, consistent approach may be advantageous

Dosing and how to take atomoxetine

Dose depends on age, body weight (in children), response, tolerability, and interacting medicines. Your prescriber will provide a personalised dosing plan. Below is general guidance for understanding how dosing is commonly structured.

General dosing approach

• Start low and increase gradually: This can reduce side effects such as nausea, sleep disturbance, and blood pressure changes.
• Adjust based on effect: If symptoms are not adequately controlled and side effects are manageable, dose may be increased.
• Consider metabolism differences: CYP2D6 inhibitors or slow metabolisers may need lower doses.

Typical scheduling

Atomoxetine is often taken:

• Once daily for many patients
• Twice daily in some cases to spread effects across the day

Practical instructions

• Swallow whole: Follow the product instructions. Do not crush or open capsules unless the medicine label instructs otherwise.
• Consistency matters: Take it at the same time each day.
• Hydration and meals: If you experience nausea, try taking with food and drink water regularly.
• Track effects: Note changes in focus, impulsivity, sleep, appetite, and mood to help your clinician fine-tune treatment.

Stopping or changing treatment

Do not stop atomoxetine suddenly unless your clinician advises it. Decisions about dose reduction or discontinuation should be guided by symptom control and tolerability.

Safety profile (important risks and what to watch for)

Like all medicines, atomoxetine can cause side effects. Many are mild and improve over time, but some require urgent medical attention.

Common side effects

• Nausea or stomach discomfort
• Reduced appetite and possible weight changes (more noticeable in children)
• Dry mouth
• Tiredness or sleep disturbance
• Dizziness
• Constipation
• Headache
• Increased heart rate and/or slight increase in blood pressure

Less common but serious concerns

Seek prompt medical advice if you experience:

• Liver problems (e.g., yellowing of eyes/skin, dark urine, severe fatigue, or persistent upper abdominal pain)
• Allergic reactions (swelling of face/lips, rash, difficulty breathing)
• Marked mood changes, agitation, or worsening depression
• Signs of suicidal thinking or severe behavioural changes—urgent medical help is essential
• Cardiac symptoms such as fainting, chest pain, or severe palpitations
• Seizures (if you have a history of epilepsy)
• Prolonged painful erections (a rare but important urological emergency)

Monitoring

Clinicians often monitor:

• Blood pressure and heart rate
• Growth and weight in children and adolescents
• Sleep, appetite and mood
• Liver symptoms if there are risk factors or concerning signs

Practical use tips for everyday success

• Build a routine: Choose a fixed time and link it to a daily habit (e.g., breakfast).
• Manage nausea early: If you feel sick, try taking with food, stay hydrated, and mention it to your pharmacist if it persists.
• Support appetite: In children, offer calorie-dense snacks and monitor weight changes.
• Sleep hygiene: If the medicine affects sleep, your doctor may adjust timing or dose; avoid late-day stimulating activities.
• Track symptoms: Use a simple daily note or ADHD symptom checklist to help evaluate response.
• Check all medicines: Keep an up-to-date list of prescription, over-the-counter and herbal products.
• Be cautious with new meds: Starting or stopping other medicines can alter how atomoxetine works in the body.

Alternative options for ADHD treatment

ADHD treatment is individual. Your doctor may consider alternatives depending on symptoms, age, medical history and side-effect preferences.

Non-stimulant options

• Guanfacine (some forms used for ADHD, depending on availability and indication)
• Clonidine (in certain circumstances, often where calming/sleep support is a key goal)

Stimulant options

• Methylphenidate (various short- and long-acting formulations)
• Lisdexamfetamine (long-acting)
• Dexamfetamine (various formulations)

Non-medicine supports

• Behavioural strategies and coaching
• School/work accommodations
• Parent training and structured routines
• Sleep and lifestyle optimisation (regular sleep, diet, exercise)

Atomoxetine is one option within a broader ADHD care plan. If symptoms aren’t improving, your clinician can reassess diagnosis, dose, and whether another medication or strategy is a better fit.

Australia: market, legal and healthcare context

In Australia, ADHD medicines are used within established clinical guidelines and local regulatory frameworks. Availability, prescribing processes, and dispensing requirements are governed by Australian laws and pharmacy regulations.

For atomoxetine, treatment decisions are typically based on:

• Age and symptom severity
• Medical history (including heart and liver considerations)
• Medication interactions (especially CYP2D6-related drugs)
• Any co-existing mental health conditions
• Ongoing monitoring needs

Recent guidance and safety communications (how to stay up to date)

Medicine guidance can change over time due to new safety information, regulatory updates, or revised prescribing information. In Australia, it’s helpful to:

• Review the consumer medicines information (CMI) supplied with your product
• Check for updates from Australian health authorities or medicine alerts
• Ask your pharmacist if there are any recent changes relevant to atomoxetine

If you notice new symptoms after starting or changing dose—particularly mood changes, signs of allergy, or liver-related symptoms—seek medical advice promptly.

Delivery and availability (online pharmacy)

Atomoxetine may be available through reputable Australian pharmacies that can supply medicines according to legal and dispensing requirements. Availability can vary by supplier and product brand/formulation.

What to expect when ordering online

• Stock confirmation: Some products may require checking availability before dispatch.
• Packaging and labelling: Medicines are supplied in manufacturer packaging with clear instructions and product identification.
• Delivery timeframes: Delivery depends on location and carrier service; allow additional time during peak periods.
• Cold chain: Atomoxetine typically does not require special temperature-controlled delivery (unless your specific product states otherwise).

If you need the medicine urgently or have questions about delivery timing, contact the pharmacy’s support team before placing an order.

FAQ

1) Is atomoxetine the same as stimulant ADHD medicines?

No. Atomoxetine is a non-stimulant ADHD medicine. It works by affecting norepinephrine signalling rather than providing stimulant effects.

2) How long does atomoxetine take to work?

Some improvement may be noticed within the first few weeks, but full effects often take longer. It’s important to take it consistently and allow adequate time as advised by your clinician.

3) Can I take atomoxetine with food?

Yes, atomoxetine is generally taken with or without food. If you have nausea, taking it with food may help. Always follow the directions on your product label or provided by your healthcare professional.

4) What if I forget a dose?

Take it when you remember unless it’s close to the next dose. Avoid doubling up. If you’re unsure, ask your pharmacist for advice.

5) Will atomoxetine cause dependence?

Atomoxetine is not typically associated with the same dependence potential as some stimulant ADHD medicines. However, it should still be taken exactly as directed and not stopped without clinician guidance.

6) Can I drink alcohol while taking atomoxetine?

It’s best to limit alcohol. Alcohol may worsen side effects such as dizziness or sleep disruption and may affect the liver. Discuss with your healthcare professional, especially if you have liver concerns or a mood condition.

7) Are there medicines I should avoid with atomoxetine?

Atomoxetine can interact with drugs that affect CYP2D6 and with medicines that influence mood, blood pressure, or heart rhythm. Tell your pharmacist about all medicines and supplements you take, including over-the-counter products.

8) Who should be extra cautious?

Extra caution may be needed if you have:

• Heart disease or a history of fainting/palpitations
• Liver disease or previous abnormal liver tests
• A history of mood disorders or suicidal thoughts
• Epilepsy or seizure disorders
• You take strong CYP2D6 inhibitors

9) What side effects are most important to report quickly?

Report promptly if you develop signs of liver problems (yellow skin/eyes, dark urine), allergic reactions (swelling, rash, breathing difficulty), severe mood changes, chest pain/fainting, or seizures.

10) What are the best tips to reduce side effects?

Practical steps include taking consistently (same time each day), considering food if nausea occurs, staying hydrated, monitoring appetite and sleep, and keeping follow-up appointments so dose adjustments can be made.

Important note

This information is a guide to help you understand atomoxetine. It does not replace medical advice. If you have concerns about side effects, interactions, or whether this medicine is suitable for you, talk to your doctor or pharmacist.