Gabapentin is a prescription medication that also goes by the brand name Neurontin. Initially used for people, it is also used in veterinary medicine to treat seizures and chronic pain in cats and dogs. Just wanted to see what kind of dosage you all are taken? I just started taking it myself I am starting at 300mg 3 times per day. When can you tell if it is working for you? I just started taking it myself I am starting at 300mg 3 times per day. Sagittal T2-weighted magnetic resonance imaging of the brain and cranial cervical spine revealing crowding of the caudal fossa, kinking of the medulla, caudal cerebellar herniation, and syringomyelia affecting the cervical spinal cord. Commonly used drugs for Syringomyelia (SM) You very often have to tweak medication for SM dogs, initially to find what suits User Reviews for Gabapentin to treat Fibromyalgia. Also known as: Gralise, Horizant, Neurontin, Gabarone. The following information is NOT intended to endorse drugs or recommend therapy. About Syringomyelia: Syringomyelia is a disorder in which a cyst forms within the spinal cord. This cyst, called a syrinx, expands and elongates over time, destroying the center of the spinal cord. NOTE: Gabapentin is also commonly used for behavior modification, especially in cats, before stressful events such as trips to a veterinary clinic. 23 The dosage for this indication is 50 to 150 mg/cat PO at least 2 hours before the scheduled stressor will occur. In very anxious or fractious cats, the same dose is often administered the night before the stressor will occur. Gabapentin is a prescription drug. It comes as an oral capsule, an immediate-release oral tablet, an extended-release oral tablet, and an oral solution. Gabapentin For Syringomyelia Causing Claustrophobia Dec 13, 2006. I am 41 years old and was diagnosed with Syringomyelia and Intramedullary ependymoma tumors about 2 years ago. Dosage Of Gabapentin For Dogs (Picture Credit: Getty Images) Dosage of gabapentin for dogs depends on whether the drug is being prescribed to treat chronic pain or a condition such as seizures.