Synbiotics

A category term for combinations of probiotics (live bacteria) and prebiotics (substrates that feed them). Not a single ingredient — efficacy depends entirely on the specific strains, CFU counts, and prebiotic fibers used. Without strain-level identification on the label, clinical efficacy cannot be evaluated. Products listing only 'Synbiotics' with a mg weight provide insufficient information for meaningful scoring. RCTs exist for specific well-characterized synbiotic formulations, but evidence does not transfer across different formulations.