The Clinical Trial of Chinese Herbal Medicine (SaiLuoTong) Capsule

Who can take part

• 40 years≤Age≤75 years, female or male
• With an education at more than (including) 6 years
• Meet the diagnostic criteria for dementia in Diagnostic and Statistical Manual of Mental Disorders-5th Edition (DSM-V)
• Meet the National Institute of Neurological Disorders and Stroke-Association Internationale pour la Recherche etl'Enseignement en Neurosciences(NINDS-AIREN) Criteria of Probable Vascular Dementia (1993)
• MRI (magnetic resonance imaging) supports the presence of ischemic cerebrovascular disease, and meets NINDS-AIREN Imaging Criteria; the diameter of each infarct≤ 30mm(And the perivascular spaces and cerebral microbleeds were excluded)
• Modified Hachinski Ischemic (mHIS) Scale ≥ 4
• Hamilton depression scale (HAMD) ≤ 17
• Patients with mild or moderate VaD: 10 ≤ MMSE ≤ 26 and 1 ≤ CDR ≤ 2
• Willing to participate in this study and could sign the informed consent form by him/herself and lawful guardian prior to the study
• The subjects must have a care giver who are cognitively normal (MMSE scores: illiteracy> 17 points, 1 - 6 years of education > 20 points, 7 years and above of education > 24 points). The care giver shall also be able to take care of the patient at least 4 days a week for more than 4 hours a day while he or she can accompany the subjects to attend each visit. During the trial, a new caregiver must have MMSE score and the results would be presented in forms of subjects in the attachment

Who cannot take part

• Gastrointestinal diseases that may affect the absorption, distribution, and metabolism of the investigational drug
• Alcohol and drug abuse
• Patients who have been given any drug that can affect the cognitive function (including Chinese herbal preparations containing any one of these: ginseng, ginkgo leaf, and saffron; Western medicines such as donepezil, karbalatine, rivastigmine, huperzine a, memantine and similar drugs, etc; Butylphthalide and other drugs with the same effect such as runeirergine, aniracetam, cytosporine, dihydroergine, nimodipine, etc) within one month before the start of this study and cannot be discontinued
• Patients who have participated in other clinical studies within 3 months prior to this study
• Patients with dementia caused by a brain disease other than VaD (such as Alzheimer's disease, dementia with Lewy bodies, frontotemporal dementia, Parkinson's disease, central nervous system demyelinative diseases, tumour, hydrocephalus, trauma, central nervous system infection, such as syphilis, AIDS and Creutzfeldt-Jakob disease)
• Patients with serious neurological impairment to finish the examination: hand hemiplegia, aphasia, and visual or hearing impairment
• The subjects have nutritional and metabolic diseases and endocrine system diseases that cannot been controlled by therapy - thyroid diseases, parathyroid disease, vitamin or element deficiency
• Patients with serious circulatory system diseases, respiratory system diseases, urinary system diseases, digestive system diseases, haemopoietic system diseases (such as unstable angina, uncontrollable asthma and active gastrorrhagia) and cancer
• Serious mental disease (such as depression and schizophrenia) and epilepsy
• Patients who are allergic to more than 2 drugs or any component of the SLT capsules
• Laboratory anomalies: hemoglobin (Hb) level less than 80g/L , platelet count (Plt) level less than 50×109/L, activated partial thromboplastin time (APTT) exceeds 2.5 times the normal upper level, fibrinogen(FIB) level less than 0.5g/L, prothrombin time (PT) exceeds 2.5 times the normal upper level, Serum creatinine (Scr) exceeds 3 times the normal upper level, alanine aminotransferase (ALT) exceed 5 times the normal upper level , aspartate aminotransferase (AST) exceed 5 times the normal upper level, alkaline phosphates (ALP) exceed 5 times the normal upper level , γ-glutamyl transferase (γ-GT) exceed 5 times the normal upper level, total bilirubin (TBiL) exceeds 3 times the normal upper level
• Pregnant or lactating women
• Cannot accept magnetic resonance imaging (MRI) examination