Advanced Research on Amorphous Drugs

A special issue of Pharmaceutics (ISSN 1999-4923). This special issue belongs to the section "Physical Pharmacy and Formulation".

Deadline for manuscript submissions: 31 August 2025 | Viewed by 608

Special Issue Editor


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Guest Editor
Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
Interests: poorly water-soluble drugs; crystalline/amorphous drugs; amorphous solid dispersions; nanocrystals; novel drug-delivery systems
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Special Issue Information

Dear Colleagues,

With advancements in high-throughput screening and combinatorial chemistry, the efficiency of new drug development has markedly increased. However, many new drugs still face significant challenges due to poor water solubility, which limits their bioavailability. Amorphous drug formulations have emerged as a promising solution to this problem, offering enhanced solubility by increasing the free energy of poorly water-soluble compounds. However, this increase in free energy also elevates the risk of physical instability, which presents a major challenge in developing stable and effective amorphous formulations.

This Special Issue will feature original research and comprehensive review articles, aiming to explore the latest advancements in the development of amorphous drug formulations. Topics of interest include, but are not limited to, innovative preparation methods, novel evaluation techniques, advanced predictive models for physical stability, and mechanistic insights into the behavior of amorphous drug formulations. Experts in these fields are invited to contribute their work to this Special Issue.

Prof. Dr. Qiang Fu
Guest Editor

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Keywords

  • high-throughput screening
  • combinatorial chemistry
  • poorly water-soluble compounds
  • poor water solubility
  • bioavailability
  • innovative preparation methods
  • amorphous drug formulations
  • free energy
  • novel evaluation techniques
  • advanced predictive models
  • physical stability
  • mechanistic insights

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Published Papers (1 paper)

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13 pages, 1308 KiB  
Article
Development of Palatable Amorphous Trazodone Hydrochloride Formulations via Ion Exchange
by Zhaohua Li, Junjie Wang, Huijian Wang, Yibo Li and Qiang Fu
Pharmaceutics 2025, 17(8), 972; https://doi.org/10.3390/pharmaceutics17080972 - 27 Jul 2025
Viewed by 399
Abstract
Objectives: The oral route is the most widely used method of administration. However, the bitter taste of drugs is a prevalent issue compromising patient acceptance. This study aimed to develop a palatable amorphous trazodone hydrochloride (TRA) formulation via ion exchange with Amberlite IRP88 [...] Read more.
Objectives: The oral route is the most widely used method of administration. However, the bitter taste of drugs is a prevalent issue compromising patient acceptance. This study aimed to develop a palatable amorphous trazodone hydrochloride (TRA) formulation via ion exchange with Amberlite IRP88 resin as the carrier. Methods: TRA-Amberlite IRP88 complexes (TRCs) were prepared using the static exchange method and their physical properties were then characterized. Molecular docking was carried out to elucidate the molecular interaction. Finally, the dissolution profiles and taste of TRCs were evaluated. Results: The Physical characterizations confirmed that TRA was amorphously dispersed in Amberlite IRP88. Importantly, the in vivo taste masking study suggested that the bitterness of TRA was effectively masked. The reason was that the dissociation of TRCs was suppressed in the saliva, resulting in reduced dissolution in the oral cavity. Conclusion: this study suggests that amorphization is effective in masking the bitterness of drugs and provides guidance for the development of palatable oral formulations. Full article
(This article belongs to the Special Issue Advanced Research on Amorphous Drugs)
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