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Two studies will serve as an example of this approach: in one, at Dongzhimen Hospital, 10 cases of heat and phlegm syndrome in dementia following stroke were identified, and the patients treated using an intravenous infusion of QKL (product number BWZ 80: 804) administered on a daily basis for 30 successive days.
Ten of these subjects with vascular dementia were given an intravenous infusion of QKL once a day for 14 successive days, in a randomized double-blind design, in which the control group were given an infusion of Chuanxiong piperazine.
Again, there was marked benefit in the QKL group, with a significant improvement on the HDS-R.
These studies suggest that QKL is of benefit in some patients who have vascular dementia, as long as an appropriate and careful differentiation of syndromes is undertaken before deciding which herbs or herbal extracts should be used.
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