Medicines & Supplements A to Z > Atomoxetine

Atomoxetine

Last updated on 15/07/2021.

Overview   |   Dosage   |    Side Effects   |   Precautions   |   Tips   |   Where To Buy  

GENERIC NAME: Atomoxetine

CHINESE NAME: 阿托莫西汀

BRAND NAME(S) IN HONG KONG: Strattera 斯德瑞, Atama, Atomotera

DRUG CLASS: Central nervous system agents

SUB CLASS: Norepinephrine reuptake inhibitors

USED FOR: Attention deficit hyperactivity disorder

AVAILABLE DOSAGE FORMS:
– 10 mg, 18 mg, 25 mg, 40 mg, 60 mg, 80 mg (capsules)

What is Atomoxetine for?

Atomoxetine belongs to a class of medications called central nervous system agents selectively acting on norepinephrine reuptake pumps. Atomoxetine is used for treating attention deficit hyperactivity disorder (ADHD).

How to use it?

Atomoxetine is taken orally as capsules. The physician will modify the dose if you are a CYP2D6 poor metabolizer. It does not differ much whether it is taken with or without food. Do not crush, chew, or open the capsule.

Attention deficit hyperactivity disorder (ADHD)
Adult
40 mg daily once in the morning or divided equally into once in the morning and once in the late afternoon. After at least 3 days, it can be increased to 80 mg daily and after 2-4 more weeks, it can be increased to 100 mg daily.

Child above 6 years of age
For those above 70 kg: 40 mg daily once in the morning or divided equally into once in the morning and once in the late afternoon. After at least 3 days, it can be increased to 80 mg daily and after 2-4 more weeks, it can be increased to 100 mg daily.
For those not heavier than 70 kg: 0.5 mg/kg daily once in the morning or divided equally into once in the morning and once in the late afternoon. After at least 3 days, it can be increased to 1.2 mg/kg daily and after 2-4 more weeks, it can be increased to 1.4 mg/kg daily and at most 100 mg daily.

What are the side effects of Atomoxetine?

Common side effects of Atomoxetine include headache, insomnia, drowsiness, excessive sweating, dry mouth, erectile dysfunction and decreased appetite.

Who should not take Atomoxetine?

– People allergic to Atomoxetine or any component of the formulation.
– People with use within 14 days of MAO inhibitors.
– Patients with narrow-angle glaucoma or uncontrolled hyperthyroidism.
– Patients with a current or history of pheochromocytoma.
– Patients with severe cardiac or vascular disorders.

Pharmacist Tips:

– Do not crush, chew, or open the capsule.
– Prevent the content of the capsule getting into your eyes, if so, flush your eyes immediately with clean water and seek medical help.
– Control your impulse with devices. For example, when you cannot manage your time properly, use a calendar app.

Common dosing schedule:
Atomoxetine is taken once in the morning or once in the morning and once in the late afternoon.

This schedule is for reference only, adjustments may be made according to individual needs. 

Some common medications Atomoxetine may interact with:
– Beta-2 agonists, e.g. Albuterol, Terbutaline, Salbutamol
– CYP2D6 inhibitors, e.g. Bupropion, Paroxetine, Terbinafine
– Monoamine oxidase inhibitors, e.g. Rasagiline, Selegiline, Phenelzine
– QT-prolonging agents, e.g. Clarithromycin, Escitalopram, Paliperidone
– Sympathomimetics, e.g. Ephedrine, Pseudoephedrine, Dobutamine

Atomoxetine may interact with many other medications. Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Atomoxetine in Hong Kong?

In Hong Kong, Atomoxetine is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at https://www.drugoffice.gov.hk

Need more information?

For detailed information about the use of Atomoxetine in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.