Intranasal drug delivery

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) This article may require cleanup to meet Wikipedia's quality standards. The specific problem is: MOS. Please help improve this article if you can. (April 2023) (Learn how and when to remove this message) This article needs attention from an expert in Medicine. Please add a reason or a talk parameter to this template to explain the issue with the article. WikiProject Medicine may be able to help recruit an expert. (April 2023) This article may contain an excessive amount of intricate detail that may interest only a particular audience. Please help by spinning off or relocating any relevant information, and removing excessive detail that may be against Wikipedia's inclusion policy. (April 2023) (Learn how and when to remove this message) (Learn how and when to remove this message)

Intranasal drug delivery occurs when particles are inhaled into the nasal cavity and transported directly into the nervous system. Though pharmaceuticals can be injected into the nose, some concerns include injuries, infection, and safe disposal. Studies demonstrate improved patient compliance with inhalation. Treating brain diseases has been a challenge due to the blood brain barrier. Previous studies evaluated the efficacy of delivery therapeutics through intranasal route for brain diseases and mental health conditions. Intranasal administration is a potential route associated with high drug transfer from nose to brain and drug bioavailability.^[1]