Probiotic ComplexProfessional Formulas Probiotic Complex Assists in maintaining or re establishing healthy gut flora. May be beneficial following antibiotic use or in the presence of GI bacterial imbalance. The probiotic activity is guaranteed at time of manufacture and the probiotics have been stabilized and bottled in air tight amber glass to prevent deterioration over time. This product should be refrigerated to ensure maximum potency. Serving Size: One Capsule