Buy Gabapentin online in the USA pharma clinic Actionpills. Gabapentin is an FDA-approved which is known as Neurontin. It treats severe pain due to surgery and is also prescribed for cancer patients to calm down the pain. This medication is used by adults, mainly after the age of 30 plus. Also, it is used for the treatment of sciatic nerve severe pain relief; the required dosage of Gabapentin is 100mg, 30mg, 400mg, 600mg, 800mg, 1200mg, and 1600 mg.