Not reliable. My two friends, Sangao and I have both tried natto, monascus and astaxanthin. We ate for four years (suffering from mild cerebral infarction) and didn't go to the hospital for thrombolysis. More than 20 thousand yuan has been thrown into the water, and health care products are not reliable for treating diseases. If they have therapeutic effects, they must be mixed with some drugs. Yangshengtang experts have pointed out this problem.