I gave my friend the herbs info and he can get them locally.There are a multitude of herbal remedies that could help your friend.
Teasel Root was the most effective for me. It warms your muscles and joints and flushes the bacteria into the blood stream where the immune system can get to it. Japanese Knotweed and Cats Claw are antibacterial and work well in conjunction with Teasel root. Cistus Incannus tea can break down the biofilms that it uses to protect itself. There are many more, but this would be a small investment that could offer some relief.
Actually, I just checked. I have a full bottle of all three blended in one tincture I ordered from a Lyme Dr. I was working with in Ontario. I'll ship it to you if your friend is interested.