Myrtol standardized (Gelomyrtol(R) / Gelomyrtol(R) forte) inhibits the
activity of 5-lipoxygenase of human basophil and eosinophil leukocyte
s and the formation of leukotriene C-4 as well as 1.8-cineole (eucalyp
tol). An increase of prostaglandins (PGE(2)) in mucous membranes of te
at cisterns after topical administration of TPA (tetradecanoylphorbol-
13-acetate) was inhibited. In vitro and in vivo studies revealed spasm
olytic and broncholytic effects of Myrtol stand. After topical adminis
tration into the teat cisterns of the isolated bovine udder Myrtol sta
nd. increased the surface temperature, comparable to effects of mentho
l.