Julie -- it depends on the dog. Like valerian root, some dogs respond well to valium and some *don't*.
Hylands Calms Forte (health store item). Give 2 (mine chew them up and think they're a treat -- but you *can* put those in food -- which is unusual for a homeopathic). Because it's a homeopathic you can give it *with* something else and it won't over-dose. Calms Forte helps the body give in to sleep.
If the valium just isn't cutting it -- stop at a health store and try some passionflower. The tincture or capsules (2 caps probably every 6 hours or the adult dose of the tincture 3 times a day). Passionflower is another nervine herb -- but it's processed differently in the body (less by the liver) and for some (dogs or humans) it just plain works better than valium/valerian.
Valium is stronger than valerian root -- valium is addictive, valerian isn't. But valium is a pharmaceutical that mimics valerian root and both are processed secondarily by the liver so sometimes it just doesn't synch well with some individuals.
You *can* give both the Calms Forte and the passionflower at the same time.
will he eat his dinner out of a Kong? That can help pass the time when on crate rest. You may also want to try giving him an interactive toy. In fact, pop a couple of kibbles in an empty plastic pop bottle -- don't leave him alone with it but it can help him pass the time and then he can graduate to other interactive toys once he figgers out he CAN get it out.
"The best and most beautiful things in the world cannot be seen or even touched. They must be felt with the heart." Helen Keller