Natto red yeast rice is very beneficial to cardiovascular and cerebrovascular diseases, especially this product has been welcomed by many people in Japan, but we should also know that it is a three-point poison, and this product still has some side effects. We should know what side effects. If taken in excess, it may damage the gastric mucosa. Therefore, it is suggested that people should pay attention to it when taking it, especially in patients with acute gastritis and peptic gastritis. These drugs may cause metabolic abnormalities, especially in patients with gout, which may aggravate the condition after taking them. People with bleeding problems should not take such products. In addition, excessive use of this product may cause gastroenteritis. People with renal insufficiency or kidney disease can't take it, otherwise it will be bad for their health. These side effects suggest that you should know clearly before taking this health care product. It is also very necessary to take health care products in the right way. Everyone knows the side effects of natto and monascus, and everyone should know the specific way and method of taking such a health care product.