Nasal drug delivery: new developments and strategies

Area of Science:

• Pharmaceutical Science
• Drug Delivery Systems
• Neuroscience

Background:

• The pharmaceutical industry shows significant interest in the nasal route for delivering challenging drugs.
• Drug delivery companies are developing novel nasal systems for generic drugs and peptides.
• Nasal drug delivery offers a promising alternative administration route.

Purpose of the Study:

• To review new developments and strategies in nasal drug delivery.
• To highlight the direct nose-to-brain drug transport via the olfactory pathway.
• To present proof-of-concept examples in human subjects.

Main Methods:

• Review of recent advancements in nasal drug delivery technologies.
• Discussion of the olfactory pathway for direct nose-to-brain transport.
• Inclusion of human studies demonstrating proof-of-concept.

Main Results:

• Emerging novel nasal drug delivery systems are being developed.
• Direct nose-to-brain drug delivery via the olfactory pathway is a validated concept.
• Proof-of-concept studies in humans confirm this pathway's viability.

Conclusions:

• Nasal drug delivery is a rapidly evolving field with significant potential.
• The olfactory pathway offers a direct route for drugs to reach the brain, bypassing the blood-brain barrier.
• Further research and development in nasal drug delivery systems are warranted.