This Dokang enzyme product comes from Japan, which mainly contains bifidobacteria and lactic acid bacteria, as well as arginine, soybean lecithin and coenzyme q 10, which can regulate immunity. Each bottle contains 150 capsules. If you take 6 capsules a day, you can eat for more than a month. Overall, the cost performance is very high. It should be noted that this product is a dietary supplement and cannot be used as a substitute for drugs. In addition, pregnant women and lactating women need to take it under the guidance of a doctor and cannot take it without authorization.