Synergistic effects of polyherbal formulations in phytomedicine: A review of traditional and contemporary evidence

Polyherbal formulations, which involve the combination of multiple medicinal plants, have been a cornerstone of traditional medicine for centuries. These formulations are based on the principle of synergy, where the combined therapeutic effects of various phytochemicals enhance efficacy, bioavailability, and safety compared to single-plant extracts. This review critically examines both traditional and modern evidence on the synergistic effects of polyherbal formulations, particularly focusing on their phytochemical interactions, pharmacodynamic and pharmacokinetic complementarity, and therapeutic relevance in managing chronic diseases such as inflammatory disorders, metabolic syndromes, and neurodegenerative conditions. While traditional practices provide empirical validation, modern research underscores the need for robust standardization protocols, advanced omics-based analyses, and evidence-based clinical trials. The review concludes by emphasizing the potential of polyherbal formulations in bridging ethnomedicine with contemporary pharmacological approaches.