1. People with protein allergies: Isinglass is a high-protein food. People with protein allergies may cause diarrhea, nausea, dizziness, even chest tightness, difficulty breathing and other protein allergy symptoms after eating it, so they should not eat it.

2. People with cold and fever: When a person has a cold or fever, the functions of various organs in the body are reduced. At this time, it is not advisable to eat too nutritious food, because the deficiency will not be replenished. Therefore, people with colds and fevers are not only not conducive to the recovery of colds, but also prolong the duration of the illness.

3. People with excessive phlegm and dampness: Isinglass is highly nutritious. For people with heavy head and body, sticky mouth, thick and greasy tongue coating, etc., eating isinglass may increase the burden on the spleen and stomach. , causing the original discomfort symptoms to worsen.

4. Women in menstrual period: Isinglass contains blood-activating ingredients. If consumed during menstruation, it can easily cause heavy menstruation. In addition, isinglass has an obvious effect of supplementing collagen and repairing human tissues very quickly. During women's menstrual period, the necrotic endometrium is shed and excreted from the body, and new ones grow. If you eat isinglass at this time, the necrotic tissue will not be excreted from the body in time and remain in the uterus. In the long run, uterine fibroids will form.