What question did this study set out to answer?

The aim is to explore the application of amorphous solid dispersions (ASDs) in enhancing the characteristics of plant-derived active pharmaceutical ingredients (APIs).

March 12, 2026Open Access

Amorphous solid dispersions as a strategy to enhance the bioavailability and stability of formulations containing plant active ingredients: An integrative review

MMMaria Eduarda de Oliveira Cardoso MeloUniversidade Federal de Pernambuco CSCamila Aparecida da SilvaUniversidade Federal de Pernambuco TDThainá dos Santos DantasUniversidade Federal de Pernambuco

Key Points

The aim is to explore the application of amorphous solid dispersions (ASDs) in enhancing the characteristics of plant-derived active pharmaceutical ingredients (APIs).
Conducted a literature search in key scientific databases for relevant articles.
Included studies published between 2000 and 2025 that focus on ASDs and plant-derived compounds.
Analyzed production methods, polymers, carriers, and physicochemical characterization techniques.
Identified 566 articles, with 84 meeting inclusion criteria for review.
Highlighted the effective use of ASDs in improving solubility and membrane permeability of plant-derived APIs.
Found solvent evaporation as the predominant method for ASD production, with some sustainable methods also noted.

Abstract

Plant-derived active pharmaceutical ingredients (APIs), including crude extracts, phytocomplexes, and isolated compounds, have been extensively investigated due to their therapeutic potential. However, their pharmaceutical application is often hindered by challenges such as low solubility, limited stability, and poor bioavailability. Amorphous solid dispersions (ASDs) have emerged as a promising strategy to overcome these limitations, enhancing solubility, dissolution, and oral absorption of these compounds, while also protecting active constituents and improving their stability. Accordingly, this review aims to explore the use of ASDs for plant-derived APIs, focusing on production methods, polymers and carriers employed, as well as characterization techniques applied to these formulations. A literature search was conducted in ScienceDirect, Scopus, Web of Science and PubMed databases for articles published between 2000 and 2025. Using terms related to ASDs and plant-derived compounds, 566 articles were retrieved, of which 84 met the inclusion criteria after screening. The review highlights successful incorporation of several plant-derived APIs into ASDs, primarily to improve solubility and membrane permeability, with isolated compounds being the most frequently studied. The solvent evaporation method was the most used, although efforts toward more sustainable production methods were also reported. Among polymeric carriers, poly(vinylpyrrolidone) (PVP), poly(vinyl alcohol) (PVA), and poly(ethylene glycol) (PEG) were the most frequently employed. The most common physicochemical characterization techniques included scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and X-ray diffraction (XRD). Overall, ASDs represent a viable and effective approach to unlock the therapeutic potential of plant-derived APIs, supporting the development of more stable and bioactive herbal formulations.

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