Formoterol is used as a long-term (maintenance) treatment to prevent or decrease breathing problems caused by ongoing lung diseases (chronic obstructive pulmonary disease-COPD, including chronic bronchitis and emphysema). Formoterol belongs to the class of drugs known as long-acting inhaled... This medication does not work right away and should not be used for sudden attacks of breathing trouble. Your doctor must prescribe a quick-relief inhaler (such as albuterol, also called salbutamol in some countries) for sudden shortness of breath while you are using formoterol. You should always have a quick-relief inhaler with you. This form of formoterol is not approved to treat asthma. People with asthma using long-acting inhaled beta agonists (such as formoterol) without also using an inhaled corticosteroid may have an increased risk of serious (sometimes fatal) breathing problems. View More Info

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