In my earlier posts on migraines, I found this herb, butterbur (Petasites hybridus), listed in traditional treatments for migraines. Working with the assumption that most migraines are results of bacterial shifts, then this would likely be an antibacterial.
- “Petasites hybridus, has emerged as a promising treatment. “
- “11 prophylactic drugs received a strong recommendation for use (topiramate, propranolol, nadolol, metoprolol, amitriptyline, gabapentin, candesartan, butterbur, riboflavin, coenzyme Q10, and magnesium citrate)
- Bold items are common for CFS
Impact on Bacteria
- “exhibited significant antibacterial activity against B. subtilis. [but not against Escherichia coli, Staphylococcus aureus]” 
That is it! Very little research on the mechanism of action.