Ginkgo leaves: A medicinal herb, not a daily health beverage. They contain toxic components. Brewing them into tea can cause paroxysmal convulsions, nerve paralysis, allergies, bleeding, and other side effects. Individuals with allergies or hypertension should use with caution.
Erythrina seeds: Not a daily health beverage. They are only suitable for hoarseness caused by wind-heat toxins affecting the throat. They are ineffective for hoarseness resulting from vocal cord nodules, incomplete vocal cord closure, or excessive smoking and drinking. Furthermore, consuming erythrina seeds can cause side effects such as loose stools and chest tightness. Elderly individuals and those with spleen deficiency should exercise particular caution.
Licorice: Glycyrrhizin in licorice has corticosteroid-like effects, promoting water and sodium retention while increasing potassium excretion. Long-term, high-dose licorice use may cause pseudoaldosteronism, manifesting as edema, elevated blood pressure, low blood potassium, and limb weakness. This indicates that licorice must be used cautiously in kidney disease.
Cassia Seed: It offers excellent protection for the optic nerve, inhibits staphylococcus growth, contracts the uterus, lowers blood pressure, and reduces serum cholesterol. It is notably effective in preventing and treating vascular sclerosis and hypertension. However, it may cause diarrhea, and long-term consumption is detrimental to health.
Wild Chrysanthemum: Slightly cold in nature with a sweet-bitter taste, it dispels wind, improves vision, clears heat, and detoxifies. After drinking wild chrysanthemum tea, some individuals may experience digestive reactions like stomach discomfort, poor appetite, or intestinal rumbling. Those with spleen-stomach deficiency-cold and pregnant women should avoid consumption.