Treatment is with antibiotics, usually doctors will use a combination of two types of antibiotics (eg doxycycline and cefdinir) for which there is some research suggesting better results. In rare cases IV antibiotics may be required, especially if evidence of cardiac or neurological involvement. Duration of treatment is for 1 to 4 months. There’s next to no evidence you should go longer than that.
After treatment patients may also need immune modulation treatment due to autoimmune reaction to the infection. High dose ivig in serious cases. Some patients also find benefit using low dose naltrexone for this though it can have a very nasty side effect of causing depression so watch yourself using it.
Almost everything else is a scam. And unfortunately with Lyme, while the patients are clearly very sick, there are an aweful lot of quacks ready to part them with their cash so be weary.
It’s important to know there are other illnesses that people need to rule out too, check for dysautonomia, POTS, ME/CFS, MS, and aaSFPN for example.