Effect of Tongluo Xingnao effervescent tablets on learning and memory dysfunction in rats with chronic cerebral ischemia Effects of Tongluo Xingnao effervescent tablets on blood rheology, iNOS, VEGF and LDH-5 in MID rats Effect of Tongluo Xingnao effervescent tablet on learning and memory of AD rats and expression of insulin-degrading enzyme in hippocampus Anti-dementia effect of Tongluo Xingnao effervescent tablet based on urinary metabonomics