Hi CM445, and thanks for your post. You may be aware that the medication Carbocisteine is a drug classified as a mucolytic. It works by reducing the viscosity of mucus, thereby facilitating moving it up and out of the patient's airway system. I am glad to hear it was efficacious for your wife.
I am also hopeful that other members of our community will see your inquiry and respond accordingly if they have used this medication.
Wishing you well,
Leon (site moderator COPD.net)