Positives

• A long COVID patient found that moderating caffeine intake significantly improved their sleep patterns, helping them avoid waking up with “extreme fog” and poor memory Reddit.
  
  
• An individual recovering from long COVID noted that reducing caffeine helped them maintain a more stable energy level throughout the day, reducing fatigue Reddit.
  
  
• One individual managing MCAS symptoms found that cutting back on caffeine reduced their heart palpitations, contributing to a calmer overall state Reddit.
  
  

Negatives

• One patient reported going three years without caffeine and seeing no improvement in their fatigue, eventually returning to a small morning dose Science for ME.
• Patients tapering off caffeine commonly describe headache, drowsiness, depressed or irritable mood, difficulty concentrating, and flu-like body aches that peak around 20-51 hours after the last dose and can drag on for over a week, which can be hard to distinguish from a Long COVID flare StatPearls.

Hurdles & Side Effects

• One patient noted the challenge of reducing caffeine, as it required “extensive research” and trial-and-error to find the right balance for their symptoms Reddit.