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Precautions
It is very important that your doctor check you or your child's progress at regular visits to make sure this medicine is working properly. Blood tests may be needed to check for unwanted effects.
This medicine may cause some people to become drowsy, dizzy, or less alert than they are normally. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or are not alert.
You should not use this medicine if you have used a drug for depression called a MAO inhibitor (MAOI), such as Eldepryl®, Marplan®, Nardil®, or Parnate®, within the past 14 days. Also after you or your child stop using atomoxetine, do not use an MAO inhibitor for at least 14 days.
Tell your doctor about all the medicines you or your child take or plan to take, including prescription and nonprescription (over-the-counter) medicines, dietary supplements, and herbal remedies.
This medicine may cause serious allergic reactions including anaphylaxis, which can be life-threatening and require immediate medical attention. Call your doctor right away if you or your child have itching; hives; hoarseness; shortness of breath; trouble with breathing; trouble with swallowing; or any swelling of your hands, face, or mouth after you take this medicine.
Stop using this medicine and check with your doctor right away if you or your child get a skin rash, dark urine, persistent loss of appetite, yellow eyes or skin, flu-like symptoms or right upper belly pain or tenderness. These could be symptoms of a serious liver problem.
Do not give atomoxetine to other people, even if they have the same symptoms that you or your child have.
Atomoxetine may cause serious heart or blood vessel problems. This may be more likely in patients who have a family history of heart disease. Check with your doctor right away if you or your child have chest pain, shortness of breath, or fainting while taking this medicine.
Dizziness, lightheadedness, or fainting may occur, especially when you get up from a lying or sitting position suddenly. These symptoms are more likely to occur when you begin taking this medicine, or when the dose is increased. Getting up slowly may help lessen this problem. Also, lying down for a while may relieve dizziness or lightheadedness.
Tell your doctor right away if you, your child, or your family, or caregiver notices any unusual changes in behavior, such as an increase in aggression, hostility, agitation, irritability, or suicidal thinking or behaviors. Also tell your doctor if you or your child have hallucinations or any unusual thoughts, especially if they are new or getting worse quickly.
This medicine may cause slow growth. If your child is using this medicine, the doctor will need to keep track of your child's height and weight to make sure that your child is growing properly.
If you or your child experience a prolonged or painful erection of the penis for more than 4 hours, check with your doctor right away.
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