Amorphous Solid Dispersions or Prodrugs: Complementary Strategies to Increase Drug Absorption

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery
• Biopharmaceutics

Background:

• Maximizing oral bioavailability is a key challenge in drug development.
• Amorphous solid dispersions (ASDs) are increasingly used to improve drug solubility and dissolution rates.
• However, ASDs may not overcome solubility limitations at high doses, necessitating alternative strategies.

Purpose of the Study:

• To discuss amorphous solid dispersions (ASDs) and prodrugs as complementary approaches for enhancing oral bioavailability.
• To review the fundamental principles of drug absorption and bioavailability.
• To summarize the literature and successful applications of ASDs and prodrugs in drug development.

Main Methods:

• Review of scientific literature on amorphous solid dispersions and prodrugs.
• Discussion of biopharmaceutical evaluation aspects for these drug delivery strategies.
• Analysis of fundamental principles of drug absorption and bioavailability.

Main Results:

• ASDs improve drug solubility and dissolution, with many marketed formulations.
• Prodrugs can increase drug solubility beyond formulation approaches, complementing ASDs.
• Both ASDs and prodrugs are valuable tools for improving oral absorption.

Conclusions:

• ASDs and prodrugs represent complementary strategies to enhance oral bioavailability.
• Understanding biopharmaceutical principles is crucial for effective application of these approaches.
• Further research and application of ASDs and prodrugs can overcome drug delivery challenges.