Myrtus Communis, Myrtle. The @ and lower dilutions are employed in the chest pains of consumptives. A more active agent is Myrtus eheken, the fluidextract being used in considerable dose (f3i) in winter cough and purulent bronchitis. Personally, I do not believe small doses or dilutions of either one of these drugs would be effective. They have not become established in regular medicine.