The dangers and drawbacks of sage are that an overdose may cause some damage to the eyes, but this varies from person to person, so it is recommended to follow your doctor’s instructions. Sage is an expectorant, cough suppressant, asthma reliever, and expectorant of wind-dampness. Sage, with a slightly sweet flavor and flat nature, can be classified into the lung meridian. It is mainly used in the treatment of cold and cough, phlegm and asthma, rheumatism and paralysis, gastrointestinal pain, dysentery, diarrhea, hypertension, serotonin, scrotal wetness and itchiness, furuncles and swollen poisons, and bruises. It should be noted that the herb should be used sparingly, with the use of flowers as an enabler, over-eating damages the eyes. There are no clear contraindications to the use of the drug and possible adverse reactions after use. Specific use should be under the guidance of a specialist.