Can Baiyunshan Compound Danshen Tablets Really Prevent Alzheimer's Disease?

I have Baiyunshan Compound Danshen Tablets in my medicine cabinet. At present, the only patent for preventing Alzheimer's disease in China is Baiyunshan Compound Danshen Tablet. The patent number is ZL 2003101124272. They used the internationally advanced "Qualcomm screening technology" to find out the scientific proportion of the effective components of 10. Tanshinone Ⅱ A is twice as high as the national pharmacopoeia standard. Borneolum not only has obvious refreshing effect, but also can improve the passing rate of blood-brain barrier, so that drugs such as Salvia miltiorrhiza and Notoginseng can enter the brain efficiently, breaking the international deadlock that there is no cure for Alzheimer's disease.