Medications for asthma and COPD (Chronic Obstructive Pulmonary Disease) can be administered either by inhaled or systemic routes. Systemic routes, which can be oral (ingested) or parenteral (subcutaneous, intramuscular or intravenous), are not common, because they present several drawbacks:
Inhalation Delivery System
There is international consensus that treatment by inhalation is the preferred form of therapy for asthma and COPD patients, because, delivering the drug directly to the airways, the risk of significant side effects experienced with other medications is reduced.
Inhaled therapies have the following advantages
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Four types of inhalation delivery systems are available
Because these four systems are not equally suitable for all patients, it is essential to maintain each of these therapeutic options if individual patient needs are to be met.