For me, yes. Vaping juices with total flavoring %'s above 15-20 gives me vaper's tongue if I vape a particular juice for too long. Make sure you're drinking enough water. Also, look up some palate cleaners. For me, drinking hot tea with lemon helps with vapers tongue.

Spicy food and a few other things you can also cause it..i never went passed 22% in my mixes tho

Running my coils too hot tends to do it for me I notice myself upping the heat at different parts of the day to meet the level of sensitivity I'm at which makes things worse in the long run. Also certain astringent flavors can be extra drying. Anything with nuts or terpenoids.

I usually try to keep my liquids under 10% flavoring, and I haven't had vapor's tongue in quite a long time. More flavoring doesn't mean you'll experience more flavor. Many commercial liquids go heavy on the flavoring so that it has a longer shelf life.

I have to take a break from some of my ADV's. I always have 6-7 recipes in my rotation so I always have something to fall back on. I started oil pulling a few months ago and I find that it really does help with vapers tongue. That and staying hydrated helps too. Check this article out about oil pulling i use coconut oil it works wonders.