This isn't real scientific but I just did a quick search on half-life:

USC.EDU

Per this site (and I've read similar things) "Valium's half-life-the amount of time it takes for half of the drug to be removed from a person's bloodstream-in a young person is typically about 24 hours, says Lipson. In a frail 80-year-old man, that half-life can be extended to 80 hours, and if an overweight person is taking Tagamet and drinking alcohol, the half-life of Valium is extended to a whopping 210 hours."

So I think you're okay after a couple of days with no Valium.

Again, it might not be fact. I'm older and wondering the same thing.

Anyone else have any pertinent info?