PrimeBiome Probiotic Review: Boost Gut Health & Immunity Naturally Immunity and Infection PrimeBiome Probiotic: Gut Health for Immune Resilience If you’re catching every cold or digestive upset, your gut might be trying to tell you something. Around 70% of immune function resides in the digestive tract—and a potent probiotic like PrimeBiome can restore microbial balance….