Abstract
Highly purified species-specific grass pollen antigens were used for inhalation bronchial challenge in 12 patients with atopic asthma. This resulted in reproducible experimental asthma. Lodoxamide tromethamine was administered by inhalation in 2 different doses, 0.01 mg and 0.1 mg, to each patient, in a double-blind, random, placebo-controlled manner, 15 min before pollen inhalation. It had a significant protective action at both doses (P < 0.05), but it produced troublesome side effects at the higher dose of 0.1 mg.