Gum can damage the spleen and stomach when taken orally for a long time, which means it can cause vomiting, diarrhea, and even bloating, nausea, as well as coughing and coughing up phlegm. This is because people with weak spleen and stomach cannot digest the tonic completely and cannot transport it, which is what Chinese medicine calls deficiency without tonic. As an extract of donkey skin, Colla Corii Asini should be taken orally after meals so that the damage to the spleen and stomach can be minimized. You can apply spleen-strengthening drugs to improve the function of the spleen and stomach, so that the gum will be better absorbed and the function of the gum will be maximized. In addition to people with bad stomach, people with fever, cold, or high blood pressure are not recommended to take Agaricus.