It is my understanding that while vasoline and silicone lube are widely used and accepted, niether stood be used internally due to absorption into the bloodsteam via the rectum, which is very "open".
Anyone know where to find factual info on this issue? NOT a website that is selling sex toys and lubes, please.
I researched whether is was OK for wife's vaginal use and the answer was yes.
Sorry for incomplete post. I was referring to silicone lube.