Helps with inflammation of the nasal mucous membranes Sinudoron (formerly Argentum / Berberis comp.) helps with both acute and chronic recurring sinusitis. Barberry has anti-inflammatory properties and helps reduce swelling of the nasal mucous membranes. Silver and quartz structure the regenerative metabolic processes. They thus not only facilitate the healing of nasal mucosal inflammation but also support overall physical recovery. Sinudoron also reduces the tendency to suffer from recurrent sinusitis.