Can Quanyuankang Granules improve immunity? Under the influence of the current epidemic, maintaining immunity has become particularly important. There are many kinds of health products on the market, and Quanyuankang Granules is one of them. Its ability to improve immunity has attracted widespread attention. This article will introduce the impact of Quanyuankang Granules on immunity from many aspects. 1. Ingredients of Quanyuankang Granules