I only just got Neuroveen for my mother. She had spinal surgery T12-L1 but suffers from peripheral neuropathy symptoms. She also had L2 -L5 surgery in July last year. I googled treatment for PN and saw Neuroveen. I only just got it delivered to me from the U.S and my mother is currently trying it. It's been several days now since she had it applied to her affected area of the legs but doesn't see the difference yet. This may take up to 3 months of up to 6 months to notice some improvement in the burning and numbness of the legs and feet. That's what the customer service representative said to me from the States, in Grand Rapids, Minassotta.