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Long-acting injectable (LAI) formulations offer improved patient compliance for chronic diseases. Despite challenges, LAIs show promise for protein-based drugs and treating conditions like HIV, Parkinson's, and Alzheimer's.

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Area of Science:

  • Pharmaceutical Sciences
  • Drug Delivery Systems
  • Biotechnology

Background:

  • Parenteral administration, particularly long-acting injectables (LAIs), is preferred for chronic diseases due to enhanced patient compliance and simplified regimens.
  • LAIs provide sustained drug release over extended periods (days to months), reducing dosing frequency and improving treatment adherence.
  • Despite extensive research over 70 years, few LAI products have achieved commercial success, with development timelines often exceeding 9-10 years post-oral formulation approval.

Purpose of the Study:

  • To explore the preparation of long-acting injectables, focusing on formulation challenges.
  • To discuss the evolution and current global market trends of various depot formulations.
  • To provide insights into the future potential of LAIs for protein-based drugs, multidrug therapy, and chronic diseases.

Main Methods:

  • Review of existing literature on parenteral depot formulations.
  • Analysis of market trends and commercial viability of marketed LAI products.
  • Discussion of formulation challenges and future prospects for LAI development.

Main Results:

  • The market for LAIs is currently dominated by antipsychotic, substance abuse, and hormonal therapy drugs.
  • Significant challenges exist in the formulation and commercialization of LAIs, leading to long development cycles.
  • Protein-based drugs and multidrug therapies represent promising areas for future LAI development.

Conclusions:

  • Long-acting injectables offer significant advantages in managing chronic diseases by improving efficacy and adherence.
  • Overcoming formulation challenges is crucial for expanding the therapeutic applications of LAIs.
  • Future research directions include developing LAIs for complex biologics and combination therapies for diseases like HIV, Parkinson's, and Alzheimer's.