1. Yes, as I mentioned, but that’s not a carte blanche heter.
2. It’s still a safek, because it’s very common.
3. It’s unusual for it to be batel; they put it there for the taste.
4. The common treif ingredient/s are not that way.
5. I don’t know how liquid Tylenol tastes, but it’s loaded with sweetener, glycerin, and flavors for a reason.
6. We’re dealing with a potential d’oraisa.
I’m not trying to tell anyone when they can and can’t use it, I’m just saying it’s not so simple. What I’m saying is no chidush either; check out what some of the major hechsherim say about it.