Homoeopathy offers a natural solution without side effects. Our immunoglobulin-A protects and defends us from the various viruses and bacteria we encounter on a daily basis, be it by inhalation or by ingestion. At this early stage, a healthy person’s immunoglobulin-A will be able to fend off any offensive pathogens. However, a person whose immune system is deficient because of stress, fatigue, chronic illness, or bad eating habits, will have more trouble defending themselves against attacking viruses and bacteria. At this stage, the invading pathogen crosses over into the bloodstream and the immune system is called into action. It is at this point that we generally begin to experience the symptoms of the illness: fever, cough, congestion, aches and pains, shivers, etc.