Gailerina
I haven't talked to my Therapist yet or my informed Doctor but from the reviews I would say yes if they are accurate. You have to understand that these are two different products with two different actions.
Brahmi is supposed to increase your cognitive ability by growing more receptors, I think it just makes the ones there more available. Increased memory gives you more intelligence and a better ability to understand. The hazard would be that if you are very negative you might become more so. But if you are positive you would in theory be able to load up more positives in memory and be able to access more of them. You would be able to use more than the negatives anxiety is choosing now.
Valerian root is the opposite. it reduces the flow of information to the brain and calms you so you have less access to memory and less chance of accessing negatives so you have a better atmosphere to think positives. The side effect of Valerian is that it makes you sleepy.
Neither one will do anything without you doing some form of thought restructuring As in CBT as in the best access is still this program. So in my opinion depending on your personality either would work as an adjunct to CBT.
This is just my opinion but it would seem if you are a positive go getter type of person whose stress comes from not having all the answers Brahmi could increase your ability to figure them out.
If you are a negative worrier type of person Valerian would be the calming answer.
This is totally based on the information on the internet being accurate and isn't carved in stone.
There is also the fact that anything foreign to your body and hence your mind can increase anxiety.
Get your Doctors approval and go slow and remember neither will cure you without CBT.
Davit