Sputolysin is a veterinary healthcare product for horses with acute, subacute and chronic conditions of the airways that feature too much (thick) mucus. This allows the horse to breathe easier. It might be necessary to make adjustments to the horse's housing or feed for permanent results. It contains Dembrexinehydrochloride as active components, which is registered on the FEI drug list and will test positive for up to 6 days.