Synbiotic support during and after antibiotics: Why probiotics plus prebiotics – and delivery – matter

Abstract

The gut microbiome is integral to gastrointestinal and systemic health. Antibiotic therapy is a major driver of gut dysbiosis, characterised by loss of microbial diversity, depletion of beneficial bacteria and expansion of opportunistic and antimicrobial-resistant pathogens. Probiotics reduce antibiotic-associated diarrhoea and support microbiome recovery, while prebiotics selectively support beneficial bacterial growth. When combined as a synbiotic, probiotics and prebiotics provide complementary and synergistic support for gut recovery during and after antibiotic therapy. This article discusses the rationale for synbiotic use, strain-specific probiotic evidence, immune effects, and the importance of targeted delivery for clinical efficacy.