subject: What Is The Best Natural Flu Medicine? [print this page] Finally, you may which to consider an herbal bath. An herbal bath is considered to be the best flu medicine for individuals seeking out an all natural flu medicine. Since the skin is the largest organ of the human body you can simply place elements such as peppermint, juniper, and clove oils into a warm tub and can simply soak in the healing powering of these excellent minerals. You should also use eucalyptus.