I think that gabapentin does not relieve pain caused by peripheral artery disease. The treatments for pain caused by peripheral artery disease are:
Cholesterol-lowering medications. You may take a cholesterol-lowering drug called a statin to reduce your risk of heart attack and stroke. The goal is to reduce low-density lipoprotein (LDL) cholesterol, the "bad" cholesterol, to less than 100 milligrams per deciliter (mg/dL), or 2.6 millimoles per liter (mmol/L). The goal is even lower if you have additional major risk factors for heart attack and stroke, especially diabetes or continued smoking.
High blood pressure medications. If you also have high blood pressure, your doctor may prescribe medications to lower it. Your blood pressure treatment goal should be less than 130/80 mm Hg. This is the guideline for anyone with coronary artery disease, diabetes or chronic kidney disease. Achieving 130/80 mm Hg is also the goal for healthy adults age 65 and older and healthy adults younger than age 65 with a 10 percent or higher risk of developing cardiovascular disease in the next 10 years.
Medication to control blood sugar. If you also have diabetes, it becomes even more important to control your blood sugar (glucose) levels. Talk with your doctor about what your blood sugar goals are and what steps you need to take to achieve these goals.
Medications to prevent blood clots. Because peripheral artery disease is related to reduced blood flow to your limbs, it's important to improve that flow.
Your doctor may prescribe daily aspirin therapy or another medication, such as clopidogrel (Plavix).
Symptom-relief medications. The drug cilostazol increases blood flow to the limbs both by keeping the blood thin and by widening the blood vessels. It specifically helps treat symptoms of claudication, such as leg pain, for people who have peripheral artery disease. Common side effects of this medication include headache and diarrhea.
An alternative to cilostazol is pentoxifylline. Side effects are rare with this medication, but it’s generally less effective than cilostazol.
In some cases, angioplasty or surgery may be necessary to treat peripheral artery disease that's causing claudication:
Angioplasty. In this procedure, a small hollow tube (catheter) is threaded through a blood vessel to the affected artery. There, a small balloon on the tip of the catheter is inflated to reopen the artery and flatten the blockage into the artery wall, while at the same time stretching the artery open to increase blood flow.
Your doctor may also insert a mesh framework called a stent in the artery to help keep it open. This is the same procedure doctors use to open heart arteries.
Bypass surgery. Your doctor may create a graft bypass using a vessel from another part of your body or a blood vessel made of synthetic (man-made) fabric. This technique allows blood to flow around — or bypass — the blocked or narrowed artery.
Thrombolytic therapy. If you have a blood clot blocking an artery, your doctor may inject a clot-dissolving drug into your artery at the point of the clot to break it up.