ArticlesNasal Delivery of [14C]Dextromethorphan hydrochloride (cas 18609-21-7) in Rats: Levels in Plasma and Brain

Add time:09/24/2019    Source:sciencedirect.com

Dextromethorphan (DM) is a neuroprotective agent. The mechanism of action is believed to be by N-methyl-D-aspartate receptor blockade. The concentration of DM in the brain is believed to be dose and route dependent. Delivery by the nasal route has received a lot of attention recently, because drug absorption from this route follows intravenous profiles with no first-pass effect. The uptake of DM in the brain from the nasal route was 65.9% compared with the intravenous route, whereas the plasma bioavailability from the nasal route was 78.8%. The nasal route is a viable alternative to the parenteral route for DM administration.

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