They recommend taking 400 mg of CoQ10 and 20 mg of PQQ daily. The neuropathy in my hands is completely gone and my feet are much improved. The majority of the pain in my feet is gone, but I still have numbness in some places. I started this a year after chemo. The hands showed improvement quickly, the feet were slower. But the worst of the pain was gone in 3-4 months. Not an overnight cure, but my pain is gone.