OptiBac daily immunity has been created especially for those looking for natural immune support. It contains the extensively researched strain Lactobacillus paracasei CASEI 431®, as well as vitamin C which helps to support your body’s resistance to infection and supports a healthy immune system. L. paracasei CASEI 431® has been studied in numerous clinical trials on thousands of people. This strain is typically studied on its own as a single strain, so we decided to keep it that way.
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