The present invention relates to a composition comprising or, alternatively, consisting of an effective amount of a mixture which comprises at least, or consists of: a) an extract of Pelargonium sidoides； b) an extract of Adhatoda vasica； and c) N-acetyl cysteine for use in a method for the preventive or therapeutic treatment of at least one respiratory tract disorder in a subject, wherein said treatment method comprises the administration of said composition to the subject.
