Atomoxetine is used to treat attention-deficit hyperactivity disorder (ADHD) as part of a total treatment plan, including psychological, social, and other treatments. It may help to increase the ability to pay attention, concentrate, stay focused, and stop fidgeting. It is thought to work by restoring the balance of certain natural substances (neurotransmitters) in the brain.
How to use Atomoxetine Capsule
Read the Medication Guide provided by your pharmacist before you start using atomoxetine and each time you get a refill. If you have any questions, ask your doctor or pharmacist.
Take this medication with or without food as directed by your doctor, usually 1 to 2 times a day. The first dose is usually taken when you wake up in the morning. If a second dose is prescribed, take it as directed by your doctor, usually in the late afternoon/early evening. Taking this medication late in the day may cause trouble sleeping (insomnia).
Swallow the capsules whole. Do not crush, chew, or open the capsules. If the capsule is accidentally opened or broken, avoid contact with the powder and wash away any loose powder as soon as possible with water. If the powder gets in your eyes, flush with plenty of water right away and contact your doctor.
The dosage is based on your medical condition, response to treatment, and other drugs you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). Do not increase your dose or take this drug more often than directed.
Use this medication regularly to get the most benefit from it. To help you remember, take it at the same time(s) each day.
Tell your doctor if your condition does not improve or if it worsens.
See also Warning section.
Stomach upset, nausea, vomiting, constipation, tiredness, loss of appetite/weight loss, dry mouth, dizziness, drowsiness, trouble sleeping, or decrease in sexual ability/desire may occur. In women, menstrual cramps or missed/irregular periods may also occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
To lessen the chance of dizziness, get up slowly from a sitting or lying position.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
This medication may raise your blood pressure. Check your blood pressure regularly and tell your doctor if the results are high.
Tell your doctor right away if you have any serious side effects, including: difficulty urinating, unusually fast/irregular heartbeat, fainting, numbness/tingling.
Atomoxetine may rarely cause serious (possibly fatal) liver disease. Get medical help right away if you have any symptoms of liver damage, including: dark urine, persistent nausea/vomiting/loss of appetite, stomach/abdominal pain, yellowing eyes/skin.
This medication may rarely cause serious problems such as a heart attack or stroke. Get medical help right away if you experience any of the following: chest/jaw/left arm pain, shortness of breath, unusual sweating, weakness on one side of the body, confusion, slurred speech, sudden vision changes.
Rarely, males (including young boys and teens) may have a painful or prolonged erection lasting 4 or more hours while using this medication. Caregivers/parents should also be watchful for this serious side effect in boys. If a painful or prolonged erection occurs, stop using this drug and get medical help right away, or permanent problems could occur. Ask your doctor or pharmacist for more details.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.