Positives

• A long-hauler started psyllium fiber powder and felt significantly better within days, with multiple commenters confirming that Metamucil “does wonders for fatigue and LC overall” Reddit.
  
  
• A 24-year-old woman who was 75–80% recovered from POTS and dysautonomia included psyllium husk in her daily stack, seeing consistent improvement in heart palpitations and bowel movements Reddit.
  
  

Negatives

• The original poster noted their improvement could be a coincidence and asked the community whether psyllium had helped others, reflecting the uncertainty around whether fiber alone was responsible for the benefits Reddit.
  
  

Hurdles & Side Effects

• A commenter warned that psyllium must be taken with large amounts of water or “it turns to cement in your guts,” and that patients on GLP-1 medications like tirzepatide should not take fiber supplements due to severe GI interaction risk Reddit.