Nasal Administration: A Tool for Tomorrow's Systemic Administration of Drugs

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Abstract
By its anatomy and physiology, due to the great amount of air treated there, the nasal route represents a very interesting possibility for the administration of products degraded in the gastro-intestinal tract or inhibited by the first hepatic pass. The nasal dosage forms most studied are bioadhesive hydrogels and microspheres, especially for the systemic administration of peptides.