The present invention relates to a dietary supplement capable of treating and preventing symptoms of immune diseases (reduced immunity, allergic disease, and respiratory disease), viral diseases (cold, varicella, and herpes zoster), musculoskeletal diseases (arthritis, traffic accident sequela, sciatica, frozen shoulder, and herniated disk), neurological diseases (insomnia, menopausal disorder, hypothermia, cold hands and feet, dysautonomia, and postpartum pain), and the like. More specifically, the dietary supplement is prepared by the following steps: preparing pettitoes or pig's head in cold water for 24 hours to remove blood and to wash the same; preparing Zanthoxylum piperitum by collecting, selecting and washing the leaves and fruits of Zanthoxylum piperitum; heating a mixture comprising the prepared pettitoes or pig's head and the leaves and fruits of Zanthoxylum piperitum and water in a water bath at 150-250 ? for 10 hours; filtering the extract heated in a water bath with a filter and mixing the extract and maple syrup; and boiling the filtered extract at 100 ? for 5 minutes and packaging the same into a pouch.