What if Niacinamide Held the Key to Long COVID Recovery? (2025)
If you've had COVID-19 or know someone who has, you've likely seen how the illness lingers. Unresolved fatigue, reduced physical capacity, and cognitive fog are common weeks or even months after the infection clears. In more severe cases, the virus left behind lasting damage to the kidneys, lungs, or vascular system. These outcomes are now recognized as long COVID. As attention shifts from short-term containment to long-term recovery, more researchers are focusing on the cellular pathways that support resilience after viral illness. One area drawing renewed attention is the use of nicotinamide adenine dinucleotide (NAD⁺), a molecule your cells use to produce energy, repair DNA, regulate inflammation, and maintain mitochondrial function. One of the most straightforward ways to raise NAD⁺ safely and effectively is through niacinamide, a common and inexpensive form of vitamin B3. Case in point, a new placebo-controlled trial published in Nature Metabolism has highlighted niacinami...