Studies indicate that ingested oral cyanocobalamin tablets are ineffective in the treatment of allergic disease, homeopathy perhaps because once ingested, they are directly metabolized in the liver. When B12 is delivered via injection or lozenge it passes throughout chronic the bloodstream bronchitis before arriving at the liver. It is during this first pass in its native form that it is believed to exert its therapeutic effect. CLINICAL RESEARCH: "The World Health Organization homeopathy (WHO) recognizes allergic rhinitis (hay fever), sinusitis, asthma,...conjunctivitis, urticaria, eczema, dermatitis (contact and chronic atopic)...allergic bronchitis and migraine headache...as diseases in which IgE-mediated allergy may be involved."1 In 1988, asthma and allergic rhinitis subjects were treated with B12. Total IgE, specific IgE and pulmonary lung functions were taken at days 45, 150 and 180 from baseline. Eight of the 9 homeopathy subjects chronic had reduced IgE. 2 In 1989 open label studies at two sites in Riverside County, CA in 1989. Sixteen of the 17 subjects had lowered IgE levels from Day 0 to Day 30. bronchitis.