Trimbow Inhaler 100/6/12.5 – Beclomethasone + Formoterol for AsthmaTrimbow Inhaler 100 6 12. 5 Advanced Asthma Management Trimbow Inhaler 100 6 12. 5 is a prescription only inhalation therapy that contains Beclomethasone Dipropionate and Formoterol Fumarate, both of which are effective in the treatment of asthma. Beclomethasone is a corticosteroid that reduces inflammation, swelling, and irritation in the airways. Formoterol is a long acting bronchodilator that relaxes airway muscles, helping the patient breathe more