Deep sea fish oil. Deep-sea fish oil is rich in Omega-3 fatty acids, which is very important for human health. Deep-sea fish oil is also rich in vitamin D, vitamin A and other nutrients, which also has a positive effect on bone health and vision protection. Vitamin E is a fat-soluble vitamin, which has the functions of antioxidation, protecting cells from free radicals and promoting blood circulation. It is a good vitamin for Yangshengtang.