<prompt> An antiepileptic drug A can also be used for the treatment of postherpetic neuralgia and pain due to diabetic neuropathy. Which of the following can be the agent A?CarbamazepineGabapentinLamotriginePrimidone  <response>: Gabapentin and progabide act by increasing the release of GABA. Gabapentin is the drug of choice for post-herpetic neuralgia and diabetic neuropathy. 