I started using different supplements every day as part of my longer-term approach. My primary supplements are targeted at nerve regrowth and improved circulation; they contain Alpha Lipoic Acid, ALC, magnesium L-threonate and B-vitamins.
Supplements don't give an immediate reaction, you have to manage your expectations with them. It's impossible to know whether or not they're helping, but for sure they aren't hurting.
Typical Cost: $20 to $60 for a 30-day supply. Can be a significant cost over time depending on the brand.