Formoterol-oral inhalation powder

Shakiness (tremor), nausea, headache, dizziness, nervousness, dry mouth, stomach upset, tiredness, trouble sleeping, or hoarseness may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.To relieve dry mouth, suck on (sugarless) hard candy or ice chips; chew (sugarless) gum, drink water, or use a saliva substitute.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.Tell your doctor immediately if any of these unlikely but serious side effects occur: fast breathing, muscle weakness/cramping, fast/pounding/irregular heartbeat, increased thirst/urination.Seek immediate medical attention if any of these rare but very serious side effects occur: chest pain, severe dizziness, fainting.A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: dizziness, rash, itching/swelling (especially of the face/tongue/throat), trouble breathing.Rarely, formoterol can cause a worsening of breathing problems (paradoxical bronchospasm) that may be life-threatening. If this occurs, immediately seek medical attention.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Before taking formoterol, tell your doctor or pharmacist if you are allergic to it; or to similar bronchodilators (e.g., albuterol, metaproterenol, salmeterol); or to sympathomimetic drugs (e.g., epinephrine, pseudoephedrine); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart disease (e.g., irregular heartbeat, angina), high blood pressure, overactive thyroid (hyperthyroidism), seizures, diabetes, metabolism problems (e.g., ketoacidosis), swelling of an artery (aneurysm), a certain tumor of the adrenal gland (pheochromocytoma).Formoterol may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can infrequently result in serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that need medical attention right away.The risk of QT prolongation may be increased if you have certain medical conditions or are taking other drugs that may cause QT prolongation. Before using formoterol, tell your doctor or pharmacist of all the drugs you take and if you have any of the following conditions: certain heart problems (heart failure, slow heartbeat, QT prolongation in the EKG), family history of certain heart problems (QT prolongation in the EKG, sudden cardiac death).Low levels of potassium or magnesium in the blood may also increase your risk of QT prolongation. This risk may increase if you use certain drugs (such as diuretics/"water pills") or if you have conditions such as severe sweating, diarrhea, or vomiting. Talk to your doctor about using formoterol safely.This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).Older adults may be more sensitive to the side effects of this drug, especially QT prolongation (see above).During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.It is not known if this drug passes into breast milk. Consult your doctor before breast-feeding.

Do not share this medication with others.Avoid allergens, irritants, smoking, and other factors that make asthma worse.Laboratory and/or medical tests (e.g., blood pressure, heart rate, EKG, pulmonary function) may be performed from time to time to monitor your progress or check for side effects. Consult your doctor for more details.Learn to use a peak flow meter, use it daily, and promptly report worsening asthma (such as readings in the yellow/red range, increased use of quick-relief inhalers).