Long COVID continues to disrupt millions of lives, especially through persistent neurological symptoms like fatigue, sleep problems, and brain fog. Researchers tested whether raising NAD+ levels with high-dose nicotinamide riboside could help restore energy metabolism and ease symptoms. While the randomized trial didn’t show major differences in cognitive scores between treatment and placebo groups, participants who took NR for at least 10 weeks reported improvements in fatigue, sleep, mood, and some executive function tasks. The results highlight both the complexity of long COVID and a promising direction for future therapies…
