a side effect of Baclofen is dizziness. (I get that, but it's usually not bad for me)
Why would you be taking valium for your balance? It's an anti-anxiety medicine, but it's also a muscle relaxer. Valium can cause a few problems with balance and also has dizziness as a side effect.
If I were you, I'd go back to the doctor, take a pad of paper with you, or have him or his nurse write out what you're taking and exactly what the medicine is for. That way you know exactly which medication you should be taking for a specific symptom.
I think the only reason I can keep my medications straight is because I've got a family of medical people to tell me which medication is which.
Edit: found a link that has a listing of side effects for valium
http://www.medicinenet.com/diazepam-...tm#SideEffects