I found PG to be harsh when I first started vaping so I switched to high percentage VG within a couple of weeks. PG made me cough. I eliminated PG eventually.This isn't unusual for many vapers. Keep in mind that a sore throat is just one of the many symptoms people get when they quit smoking or cut down the smoking a lot. The symptoms may continue until smoking is completely stopped.
Thanks for your response! I didn't realize that a sore throat can be a symptom of quitting smoking. I wonder why that is? I think since I had more symptoms that is was something in the ejuice but quitting smoking could have made my throat worse.