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Antihistamines As the name indicates, an antihistamine headachetherapy counters the effects of histamine, which is released by the mast cells in the body''s tissues headachetherapy and contributes to allergy symptoms. headachetherapy For many years, antihistamines have proven useful in relieving sneezing headachetherapy and itching in the nose, throat, and eyes and in reducing nasal swelling and drainage. Many people who take antihistamines experience some distressing side effects: drowsiness and loss headachetherapy of alertness and coordination. In children, such reactions can be misinterpreted as behavior problems. During the last few years, however, antihistamines that headachetherapy cause fewer of these side effects headachetherapy have become headachetherapy available by prescription. These new nonsedating antihistamines headachetherapy are as effective as other antihistamines in preventing histamine-induced symptoms, but do so without causing sleepiness. In 1990 study in San Diego, CA the 5 active subjects with allergic rhinitis had a lowered total serum IgE from Day 0 to Day 90 while 4 placebo subjects, (2 with allergic rhinitis, 1 with asthma and 1 with both), had flat or increased IgE levels.4 In a randomized, double-blind, headachetherapy placebo controlled study of symptoms and serum IgE levels in San Diego, CA in mid-1991, subjects had allergic rhinitis and/or asthma. Serum was drawn at Day 0 and Day 30. Seven of the 10 active treated subjects had a reduction in total serum IgE levels. In 10 placebo treated subjects, 5 had levels of total serum IgE that stayed the same (plus or minus 5%), 3 decreased and 2 increased.5 Statistical analysis of the open-label study as well as the double-blind randomized placebo controlled study have shown a significant effect of vitamin B12 in lowering serum IgE concentrations.
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