🧫 What Are Postbiotics? Postbiotics are beneficial compounds produced when probiotics (good bacteria)  break down prebiotics (the fiber they feed on) in your gut. Think of them as the “end products”  of a healthy microbiome — tiny metabolites that pack a big punch for your digestive and immune health. These include: Short-chain fatty acids (like butyrate and acetate) Enzymes Peptides Cell wall fragments Vitamins and amino acids While probiotics are living microorganisms, pos