Is burowsolution also used as an ear drop?

(in collaboration with Apoth. M. Dooms) Indeed, for treatment of an exudative otitis externa with considerable swelling but without a drum perforation, burowsolution is used as an ear droplet in the form of mesh tampon. The use is described as follows:

With prolonged use of bus solution as an ear drop, by crystallization stone hard deposits can occur against the eardrum, which can give rise to inflammation and bleeding; this does not occur when using the ear plug.