24/02/2026
Most conversations about alcohol intolerance in long COVID, ME/CFS, and fibromyalgia stop at histamine. But histamine is rarely the full story.
Alcohol shifts NAD+/NADH balance, blood flow, gut signaling, and autonomic regulation all at once, which may explain why tolerance suddenly changes after viral illness.
Check out a new blog focusing on these mechanisms below:
https://www.postviralnutrition.com/blog/alcohol-intolerance-long-covid-mecfs
Alcohol intolerance in long COVID / PASC, ME/CFS, and fibromyalgia explained. Learn why wine, fatigue, brain fog, and gut symptoms happen after viral illness.