Just wondering if you're familiar with Dr. Farid Jalali and his theory Long COVID is a form of or related to Mast Cell Activation Syndrome?
From the little bit I saw it seemed like maybe he was recommending aggressive use of antihistamines. I believe some of it may have been incorporated into the FLCCC IRECOVER protocol.
The other thing that he seemed to believe might work is anticoagulants, but he was concerned that the doses that would need to be taken are potentially hazardous in and of themselves.