Does Postbiotic Help With Postbiotics (non-viable microbial products including heat...?

Evidence Summary

Postbiotics (non-viable microbial products including heat-killed bacteria and fermentation metabolites) have shown some exploratory signals in specific contexts: one small RCT found improved skin elasticity in women aged 40+ with heat-killed KABP-065 versus placebo (PMID: 41414786), and a pilot RCT found that a fermentation-derived postbiotic co-administered with antibiotics increased gut microbiome diversity and enriched health-associated taxa compared to placebo (PMID: 41312988). A 12-week RCT of heat-killed ID-ACT 3302 for skin aging found no significant benefit over placebo on the primary wrinkle endpoints, with only an exploratory, unadjusted signal for one elasticity measure (PMID: 41754111).

Source: auto-research

Effective Dose

No established dose — doses vary widely by strain, formulation, and indication across provided studies