Inhaler

Inhaler (also known as a puffer) a medical device used to deliver and absorb medicinesinto the lungs through a person's breathing for the targeted medical treatment, eg, inchronic obstructive pulmonary disease (COPD) and asthma, as well as a quick action bypassing slow absorption in oral drug intake. Inhaled medications like salmeterol, corticosteroids, etc., improve symptoms and lung function.

The most widespread type of inhaler is the pressurized metered-dose inhaler (MDI) made up of - a metal canister, plastic actuator, and a metering valve. The medication is usually stored in solution in a pressurized canister that contains fuel or suspension. The MDI canister is attached to hand-operated plastic actuator. On activation, ie, taking the cap off and shaking the inhaler, breathing for 5–10 seconds and pressing the metered-dose inhaler a set medication dose in aerosol form release into a patient's lungs through the actuator.

Nebulizers, another form of an inhaler, are designed to deliver aerosolized medication as a continuous mist over an extended period through a mouthpiece or face mask over multiple breaths, allowing a patient to breathe normally and receive medications. A nebulizer is generally used for people who can't use an inhaler, eg, infants, young children, very ill people, or people who need large doses of medication. Other inhaler types are dry powder inhalers, soft mist inhalers, etc. Each device has advantages and disadvantages and can be selected based on the age, needs, and lung function of the patient. [Mamun Rashid Chowdhury]