Thanks for asking.
is a serotinine reuptake inhibitor used in the treatment of depression
and panic attacks.
In addition it has a role in the neuropathic pain
, that is the pains originating from the nerves ,as in your case.
It's antidepressants and panic attack properties need around 4-6 weeks to start having the beneficial effects, for the nerves the the time frame should be roughly the same , that is 4-6 weeks before a substantial improvement in the symptoms is noticed.