In 1992 in El Paso, TX a randomized, double-blind, nettle placebo controlled study of subjects (n=130) with allergic rhinitis in 1992-1993 was conducted. The average IgE level of the herbs placebo treated subjects remained essentially flat, while the average IgE level for active treated subjects was reduced significantly from baseline to Day 30.7 In 1993 in nettle El Paso, TX, valid subjects (n=66) returned a second set of symptom diaries which they had completed for days 365 to 395 (the same period, one year after the first set of symptom herbs diaries). The active group had mean symptom scores showing statistically significant decreases from 1992 to 1993. The placebo group had increased symptoms in 1993. (The relevant pollen counts at the study site in 1993 were much higher than in 1992, leading to expectation of higher symptoms.)7

Patients gave blood serum samples prior to the treatment in 1992 and one year later in 1993. They were immunoassayed nettle for specific IgE antibodies using herbs a chemi-luminescent technique. Statistician Bradley Rosebrook ran T-Tests comparing average baseline IgE levels to one-year. For the seasonal allergens reported, the active group (n=34) had on average a greater reduction in IgE than the placebo group (n=33).7 On August 14, 1996 representatives of Broncorp, Inc. met with nettle the Division Director, herbs Dr. John Jenkins, and 14 nettle other FDA officials of the Pulmonary Division at a PreNDA meeting. Dr. Mansfield made a presentation herbs on nettle the 1995 study data (n=165) from Oregon, Washington and Idaho. He noted that together the data failed to show statistical superiority of vitamin B12 on the primary endpoint. He noted that in Washington and Idaho, during the later part of the study, there was herbs a drop in the pollen counts and marked improvements nettle and herbs in symptoms nettle in both the vitamin B12 and placebo groups. (This made a therapeutic benefit of the B12 treatment difficult to demonstrate.) But that the pollen counts in Oregon remained higher herbs throughout the study and that the data from Oregon showed a significant difference between the active and placebo groups.8