Medical devices and methods for rapid and efficient systemic 
drug delivery via mucous membranes, particularly oral mucosae, are described. Use of such devices and methods are particularly easy for people without any 
medical training to employ should they be called upon to provide emergency 
medical treatment for a victim suffering from 
anaphylactic shock, 
opioid overdose, or other life-threatening events. In some embodiments, the device includes an applicator tip with a porous 
application layer positioned on the end of an elongate 
handle. The device may also include various means for disrupting a barrier to facilitate mixing of compounds, including an 
active ingredient, and permit flow of the compounds from a reservoir to the applicator tip.