Spiky, bitter and cold, Prunella vulgaris has the functions of clearing away heat and purging fire, clearing liver-fire, improving eyesight, dispersing stagnation and reducing swelling, etc. It is not toxic in itself, but there is no absolute statement about medicinal materials. Even toxic medicinal materials are good drugs for treating diseases as long as they are symptomatic and used correctly. Medicinal materials that are not toxic in themselves will also produce a series of toxic and side effects if they are not used properly.

2 Excessive dosage of Prunella vulgaris is generally 9-15g, and Prunella vulgaris tastes bitter and cold. Excessive dosage may cause irritation to the stomach, causing diarrhea, abdominal pain and other discomfort.

After all, taking Prunella vulgaris every day is a Chinese herbal medicine, and its medicinal properties need to be metabolized by liver and kidney. Taking Prunella vulgaris every day may increase the burden on liver and kidney, which is not conducive to the health of liver and kidney. If it is used as a daily heat-clearing and detoxification, it is recommended to take it about 2-3 times a week.

4. People with spleen and stomach deficiency and cold have weaker gastrointestinal function than ordinary people. Prunella vulgaris tastes bitter and cold, which contains a saponin substance, which can stimulate the stomach to a certain extent. Taking Prunella vulgaris may aggravate its original abdominal discomfort, diarrhea, loose stool and other symptoms, so people with spleen and stomach deficiency and cold should not take Prunella vulgaris.