Since many years I have been advising MINOCYCLINE for TIA’S or CVA’S [strokes with amazing results……ignored by neurologists, even with extensive literature [ see other articles ]

I have seen it working good for brain fog and other strange neurological symptoms after covid-19.

Erigeron breviscapus May Treat Cerebrovascular Diseases via Multiple Pathways [American Botanical Council] Hope to find where to purchase it.