I have found that OBGYNs are big lube fans. However, they don't know a lot about them, they just tell you to get a lube after you have a baby or when you're on the Pill or going through peri-menopause (reasons many women find themselves dry.) But, they usually just tell you to use KY or once in a while one might mention Astroglide.
I have never, in all the years I've been going to GYNs and even working for them, had one say anything about the safety of ingredients.
I only found out that glycerin can cause UTIs or vaginal infections from a little book I got with the first toy I bought from Babeland. This is good information (everybody at Edens seems to know it, but I hadn't come here yet at that point) but I had never been taught that in all my nursing and medically related classes and instructions. Sadly, the medical profession doesn't seem to know a lot about sex.
Anyway, we have tried different lubes, at the present only accepting lube with glycerin for anal play. All around lubes I prefer as few ingredients as possible and I like thick rich lubes better than watery ones.
I read both the ingredient lists and the reviews before trying a lube. For new lubes I am going to review myself, I read the ingredient list and try to determine what might be great for My Man and I to use consistantly.
We are still in the process of finding a perfect lube, but have several that we really like and consistently use.