What are the side effects of胖大海 (Sterculia lychnophora)?

Generally, Semen Sterculiae Lychnophorae (Pang Dahai) is the dried mature seed of the plant Sterculia lychnophora Hance of the Sterculiaceae family. It has functions of clearing heat and moistening the lungs, relieving sore throat and improving voice, and moistening the intestines to relieve constipation. Its possible side effects may include spleen and stomach deficiency-cold, lowering blood pressure, affecting blood glucose levels, causing constipation, and throat discomfort, among others. A detailed analysis is as follows:

1. Spleen and Stomach Deficiency-Cold

Pang Dahai is cold in nature. Long-term or excessive consumption may damage the yang energy of the spleen and stomach, leading to spleen and stomach deficiency-cold. Symptoms may include poor appetite, abdominal distension, and diarrhea, especially in individuals who already have weak spleen and stomach function.

2. Lowering Blood Pressure

Pang Dahai has a certain blood pressure-lowering effect. Individuals with normal or low blood pressure who consume excessive amounts of Pang Dahai steeped in water over a long period may experience further drops in blood pressure, resulting in symptoms such as dizziness, fatigue, and palpitations associated with hypotension.

3. Affecting Blood Glucose Levels

Pang Dahai contains saccharides such as galactose. If consumed in large quantities by individuals with diabetes, it may interfere with blood glucose control and lead to fluctuations in blood sugar levels.

4. Causing Constipation

Pang Dahai has a certain effect in moistening the intestines and promoting bowel movements. However, excessive consumption may cause overstimulation of intestinal motility, leading to intestinal dysfunction and, paradoxically, causing constipation, especially in individuals with weaker intestinal function.

5. Throat Discomfort

Although Pang Dahai has the effect of clearing heat and relieving throat discomfort, improper use, such as taking it without appropriate indications, may irritate the throat and worsen discomfort, such as increased dryness or soreness of the throat.

Before using Pang Dahai, it is best to consult a professional physician to ensure safe and effective usage. During use, if any adverse symptoms occur, usage should be discontinued immediately and medical attention sought.