Hello and welcome to Lybrate. I have reviewed your query and here is my advice. Zen retard 200 mg tabletfunctions as an anticonvulsant, and decreases the occurrence of abnormal nerve impulses in the brain which can lead to severe reactions like seizures and acute pain. The drug essentially treats nerve pains like trigeminal neuralgia as well as diabetic neuropathy. Moreover, the drug also effectively treats bipolar disorder. I suggest telephonic counseling for you. You can contact me for further advice and treatment options. Let me know if I can assist you further. Take care.