Inhalation is the one form of administration of drugs many of us forget. Swallowing drugs is taught to us as young children -“ if we have a headache, we swallow a Panadol. Other methods such as injecting and shafting substances are usually covered by the media in a sensational manner. Although many people overlook inhalation, it is the form that directly affects almost everyone in the community by way of passive smoking.
In the case of inhalation, the drug is absorbed into the bloodstr