Lion's mane mushrooms regrow myelin on nerve axons and are being studied now for repairing nerve damage and neuropathy. There are lots of companies selling supplements of it now, and you can find it fresh in many grocery stores.

Niacin helps to increase blood flow to help get the lions mane to the extremities. A multi b-vitamin high in niacin would be ideal

High doses of CBD can help reduce inflammation and some say it helps with pain

Massage, chiropractic, and extensive stretching of the area around the pain could help