Efficacy and Safety of Hou Gu Mi Xi in Patients With Spleen Qi Deficiency and Non-organic Gastrointestinal Disorders

Chronic gastrointestinal disorders are one of major health problems around the globe. The annual number of patients with chronic gastrointestinal disorders was about 60 to 70 million in American. According to the American statistics in 2014, 4.6 million admissions and 230 thousand patients died due to chronic gastrointestinal disorders. The direct or indirect costs caused by chronic gastrointestinal disorders reached at 142 billion dollars. In China, the incidence of chronic gastrointestinal disorders is 7.3‰ among urban residents, which ranks No. 5 among all diseases and leads to 975 dollars of annually medical costs for per patient.

Along with the development of medical science, traditional Chinese medicine (TCM) is playing an increasingly rule in treatment of chronic gastrointestinal disorders, especially for these mild gastrointestinal disorders which are hard to obtain efficacy in western medicine. Shen Ling Bai Zhu San, a classic Chinese medicinal formulae originally described in Tai Ping Hui Min He Ji Ju Fang in the Fang Song Dynasty (1102 AD), is composed of ginseng, tuckahoe, atractylodes, baked licorice, coixenolide, Chinese yam, lotus seed, shrinkage fructus amomi, platycodon grandiflorum, white hyacinth bean, and dried orange peel. It has effects of replenishing qi and invigorating spleen (spleen is a TCM conception different from western medicine), as well as penetrating wet and antidiarrheal. It is mainly used for treating the syndrome of spleen qi deficiency, including dyspepsia, chest and stomach distress, borborygmus and diarrhea, limb weakness, thin body, sallow complexion, pale tongue with white and greasy coating, and weak and slow pulse, etc. In the theory of TCM, spleen is the source for producing qi and blood and thus is the root of life. Shen Ling Bai Zhu San could invigorate spleen by supplying spleen and remove wet, and finally nourish the stomach and intestine.

To date, Shen Ling Bai Zhu San is mainly used to treat mild gastrointestinal disorder like irritable bowel syndrome and functional dyspepsia in patients with a TCM syndrome of spleen qi deficiency. Pharmacologic study revealed that Shen Ling Bai Zhu San could adjust function of anaerobic and aerobic bacteria in gastrointestinal tract; specifically, it could improve the proliferation of probiotics (such as bifidobacterium) and inhibit the main resistance strains (such as enterococcus) and thus has an effect to improve gastrointestinal symptoms.

Hou Gu Mi Xi is a dietary therapy form of Shen Ling Bai Zhu San, of which removes atractylodes and platycodon grandiflorum (two herbs that could not be used as food) from Shen Ling Bai Zhu San, and adds perilla leaf for adapting a dietary therapy. Hou Gu Mi Xi used the main formula of Shen Ling Bai Zhu San, so that it could theoretically maintain the treatment effects. Although the reliable health effects of Shen Ling Bai Zhu San has been proved in previous studies, Hou Gu Mi Xi is optimized in formula and its preparations changed from electuary to rice paste, so that its functional mechanism and efficacy may also be different. Therefore, the investigators plan to perform a hospital-based randomized controlled trial, enroll patients from five hospitals in Nanchang City of Jiangxi Province in China, for assessing efficacy and safety of Hou Gu Mi Xi on Gastrointestinal symptoms and indicators in Patients with Spleen Qi Deficiency and Mild Gastrointestinal Disorder.

Inclusion criteria

• Patient should have mild gastrointestinal disorder without any organic pathologic changes (see exclusion criteria) by diagnosis of gastroscopy within 6 months, which mainly include chronic non-atrophic gastritis, functional gastrointestinal disorders, irritable bowel syndrome, and functional dyspepsia
• Patient should be status of spleen qi deficiency, that is, meet 2 main symptoms of spleen deficiency and 2 main symptoms of qi deficiency, or have 2 main symptoms of spleen deficiency, 1 main symptoms of qi deficiency and 1 tongue symptom, or have 1 main symptom of spleen deficiency + 1 main symptom of qi deficiency + 2 secondary symptom + 1 tongue symptom as follow:

• Main symptoms of spleen deficiency: a) poor appetite; b) abnormal stool (loose, diarrhea); c) abdominal distention after meal or afternoon
• Main symptoms of qi deficiency: a) fatigue; b) tired mind and taciturnity
• Secondary symptoms: a) tastelessness, hypodipsia, like hot drink, or polysialia; b) abdominal pain, as a result either patients like warm or press, or remit after meal, or occur when work; c) nausea and vomiting; d) fullness in stomach; e) abnormal bowel sounds; f) lean or puffiness; g) sallow complexion; h) powerless defecation weakness; i) edema
• Tongue symptoms: pale or swollen or teeth-printed tongue with thin and white fur
• Fourteen years old or more
• Sign the informed consent

Exclusion criteria

• Patients who have organic pathologic changes, including peptic ulcer, gastrointestinal erosions, gastroesophageal reflux disease, acute gastrointestinal hemorrhage or perforation, structural changes in gastrointestinal structure, gastrointestinal vascular diseases, ileus, and benign tumor
• Pregnancy or breast-feeding women
• Allergic to sample or sample composition
• impaired liver function, including one of following condition: a) total bilirubin > 2 upper limit of normal (ULN); b) alanine transaminase >2 ULN; or c) aspartate aminotransferase >2 ULN
• impaired kidney function, that is, serum creatinine >2 ULN
• obviously abnormal electrocardiogram
• patients who undertaken drugs that could cause damage in stomach and intestine, or patients experience side effects of dyspepsia as undertaking non-steroidal anti-inflammatory drugs, theophylline, oral antibiotic or potassium supplements within 3 months
• patients who are receiving any agents or other intervention for treating his/her gastrointestinal disorder
• patients with any malignant tumor
• patients who have severe mental disorders so that could not control his/her action and coordinate the treatment in this trial.
• patients who are unwilling to provider personal information and enter this trial
• patients who cannot understand and sign informed consent