Ambroxol hydrochloride, the active ingredient of this medicine, belongs to a group of medicines called mucolytics, which act by decreasing the viscosity of the mucus, making it fluid and facilitating its elimination. This medicine is indicated to facilitate the elimination of excess mucus and phlegm, in colds and flus, for adults and children from 2 years of age. You should consult a doctor if it gets worse or if it does not improve after 5 days (3 days in children under 6 years old).