While there are no actual types of GLP-1 patches, for the ease of understanding we may divide them into those claiming to be GLP-1 patches (herbal patches) and those actually containing a GLP-1 drug (which are still under trial)
Diabetes Care, 46(8), 1516-1525
The neurons in these areas that express the GLP-1 receptor interact with GLP-1 analogs, indirectly influencing central circuits
The drug has a half-life of roughly one week, so its effects on things like appetite gradually diminish as it leaves your system
Thick mucosal tissue, reduced blood flow to the sublingual area (common in smokers), chronic dry mouth from medications, and mouth breathing during sleep that carries over to the dosing period can all reduce how effectively drops work
If pain persists past 3 to 6 months or is disregarded, consult a peripheral nerve specialist