Review: Utilization of Polyherbal Extracts in the Development of Microparticulate Systems for Drug Delivery
Abstract
Introduction: Polyherbal extracts contain various bioactive compounds that work synergistically to provide stronger therapeutic effects than single extracts. However, their use in the pharmaceutical field still faces challenges, especially related to low solubility, instability, and limited bioavailability. Microparticulate system technology presents an innovative solution that can increase the effectiveness of herbal drug delivery through physical protection of active compounds, controlled release, and increased absorption in the body. Objective: This review discusses research progress that integrates polyherbal extracts in microparticulate formulations, including polymer selection, manufacturing techniques, characterization, and pharmacological evaluation. Methods: A systematic literature review was conducted through searches in the last ten years [2015–2025] obtained through databases such as PubMed, ScienceDirect, and Google Scholar using keywords related to "polyherbal" and "microencapsulation" with a focus on articles on formulation studies and pharmacological evaluations in the last ten years. Results: The study showed that microparticulates were able to improve the entrapment efficiency, phytochemical stability, and therapeutic activity of polyherbal extracts, especially in oral and transdermal routes of administration. However several limitations such as the variability of natural product composition, potential interactions between compounds, and regulatory challenges still require further attention. The development of more advanced formulation technology as well as standardized toxicological and clinical studies are urgently needed to encourage the implementation of microparticulate herbal products on an industrial scale. Conclusion: Overall, polyherbal microparticulate systems have promising prospects as a safe, effective, and competitive strategy for modernizing herbal medicines.