Thanks for the query..
As Trigeminal Neuralgia
is the nerve of face and any disturbance in its function like is a large artery
impinging over the nerve causing damage of the Myelin Sheath [ a protective cover over the nerve] leading to severe electric shock
Other causes are disorders like Multiple sclerosis
, tumour compressing the nerve, physical trauma etc..
So in these cases neurotic painkillers are helpful rather than NSAID's.
So in case if Topiramte is not helping you, you can consult your Neurologist
and discuss about it so that he can advise you other classes of drugs like Carbamazipine [Tegretol] and Gabapantin for relieving pain..
Hope this helps..