combination inhaler
A combination inhaler packs two or more respiratory medicines into a single device, so one puff delivers both at once. Instead of juggling separate inhalers on different schedules, the patient does one action and gets a coordinated dose — convenient, and easier to stick with.
The commonest pairing puts an inhaled corticosteroid together with a long-acting beta-agonist, marrying an anti-inflammatory that calms the airways with a bronchodilator that keeps them open. Other combinations join two bronchodilators (a long-acting beta-agonist with a long-acting antimuscarinic) for COPD, and triple inhalers now combine a steroid with both bronchodilator classes for more advanced disease.
The main benefit is simplicity and better adherence, since fewer devices and steps mean fewer missed doses; bundling also guarantees a steroid is never taken without its partner bronchodilator in asthma. The trade-off is reduced flexibility: the two drugs go up and down together, so a clinician cannot fine-tune one component independently the way separate inhalers allow.
Some ICS-formoterol combinations are now used both as the daily controller and as the reliever, an approach known as maintenance-and-reliever therapy.