Positives

• Patients in a Phoenix Rising Buhner protocol thread reported reduced neurological inflammation and improved cognitive symptoms after adding Japanese knotweed root tincture, attributing the effect to resveratrol crossing the blood-brain barrier Phoenix Rising.
  
  
• A patient case-series review noted symptom improvement when Polygonum cuspidatum was added to multi-herb protocols, with patients describing better blood flow to joints, eyes, and skin PMC.
  
  

Negatives

• Forum members consistently reported that knotweed gave them diarrhea, with several patients having to back off their dose to manage GI side effects Phoenix Rising.
  
  
• Some patients felt resveratrol alone was insufficient and described continuing to relapse despite long-term use, treating it more as adjunct support than a standalone cure PMC.
  
  

Hurdles & Side Effects

• Patients described difficulty sourcing standardized knotweed extracts with verified resveratrol content and had to titrate slowly to avoid intense Herxheimer flares LymeDisease.org.