To buy authentic red yeast rice, you can choose to visit a reputable herbal store or specialty store. These stores have professional purchasing channels and strict quality control to ensure the quality of the red yeast rice they sell. When purchasing, you can pay attention to check the packaging and labeling of the product to ensure that the source is clear and the information is complete.

Some large wholesale food markets or online e-commerce platforms may also sell authentic red yeast rice, but be sure to verify their reputation and product quality before buying. As a traditional Chinese medicine, red yeast rice has health functions such as lowering blood lipids and blood pressure, so please be careful when purchasing to ensure that you are buying an authentic, high-quality product. If possible, you can also consult a professional herbalist or pharmacist for more accurate purchasing advice.