All resp tract diseases leading to formation of thick secretions difficult to be expectorated eg, acute & chronic bronchitis, laryngitis, sinusitis, tracheitis, flu, bronchial asthma & (as complementary treatment) mucoviscidosis.
Adult & adolescent ≥12 yr 600 mg daily, divided into 1 or more administrations (eg, 200-mg sachet tds). Childn 2-12 yr 1 100-mg sachet tds or 200 mg bd.