An Overview of Recent Patents and Future Perspective Based on Cyclodextrin Complexation

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery
• Materials Science

Background:

• Many orally administered drugs suffer from poor aqueous solubility and dissolution rates, limiting their bioavailability.
• Poorly water-soluble (PWS) drugs present significant challenges in pharmaceutical formulation and development.
• Cyclodextrins (CDs) are versatile pharmaceutical excipients that can address these solubility and bioavailability issues.

Purpose of the Study:

• To provide a comprehensive overview of cyclodextrins (CDs) and their derivatives.
• To discuss the manufacturing processes, physicochemical properties, and advantages of CDs in drug formulations.
• To highlight recent advancements, patents, and specific examples of modified CDs in pharmaceutical applications.

Main Methods:

• Review of scientific literature on cyclodextrins and their applications in drug delivery.
• Analysis of the physicochemical properties and structural features of various cyclodextrin derivatives.
• Examination of case studies and patented formulations utilizing cyclodextrin technology.

Main Results:

• CDs form inclusion complexes with poorly water-soluble drugs, significantly enhancing their solubility, dissolution rate, and bioavailability.
• CD-based formulations demonstrate improved drug stability, reduced drug irritation, and can act as taste and odor masking agents.
• Various chemically modified CDs, including Captisol, sulfobutyl ether-β-CD, and hydroxy propyl betadex, are effectively used in diverse oral and parenteral dosage forms.

Conclusions:

• Cyclodextrins and their derivatives are crucial pharmaceutical adjuvants for developing effective formulations of poorly water-soluble drugs.
• CD technology offers a robust strategy to overcome drug delivery challenges, improving therapeutic efficacy and patient compliance.
• The continuous development of novel cyclodextrin derivatives promises further advancements in pharmaceutical formulation and drug product innovation.