Budesonide with formoterol fumarate dihydrate (inhalation) belongs to which of the following therapeutic drug classes? Select all that apply.

A. Antiallergy medications generally include antihistamines or mast cell stabilizers that target the early-phase allergic response. While the corticosteroid component reduces inflammation, this combination is specifically indicated for chronic respiratory pathologies. It is not classified as a primary antiallergy agent. B. Bronchoconstrictors represent a pharmacological class that narrow the airways, which is the opposite effect of this medication. Formoterol acts as a long-acting beta-2 agonist to induce smooth muscle relaxation. This drug combination is intended to treat, not cause, bronchoconstriction. C. COPD agent is a correct classification as this combination is FDA-approved for the maintenance treatment of airflow obstruction in chronic obstructive pulmonary disease. The long-acting bronchodilator ensures sustained patency of the airways. The corticosteroid component helps reduce the associated chronic inflammation. D. Antiasthmatic is a correct therapeutic class because this combination targets the underlying inflammation and bronchoconstriction in asthma. Budesonide reduces airway hyperresponsiveness through glucocorticoid receptor activation. Formoterol provides long-acting bronchodilation to prevent nocturnal and exercise-induced symptoms.