Fostair is a prescription medication primarily used in the management and treatment of asthma and chronic obstructive pulmonary disease (COPD). It is a combination inhaler that contains two active ingredients: beclometasone dipropionate, a corticosteroid that helps reduce inflammation in the lungs, and formoterol fumarate dihydrate, a long-acting beta2-adrenergic agonist (LABA) that works by relaxing the muscles in the airways to improve breathing. Fostair is designed for inhalation use and helps to prevent the symptoms of wheezing, coughing, and shortness of breath associated with asthma and COPD, making it easier for patients to carry out their daily activities. It is important for patients to follow their healthcare provider's instructions on how to use Fostair correctly to ensure its effectiveness and to minimize potential side effects.