A thoughtful decision framework starts with your cat’s baseline. If your cat is losing weight, vomiting, drinking more, hiding, or missing jumps, those are medical signals first. Supplements should not be used to “wait out” symptoms. In diet-stress research, NR has been linked to liver-protective signaling, but that is not a substitute for diagnosis (Sambeat A, 2019).
If your cat is stable and you are thinking about longevity support, ask: What is the goal—energy steadiness, healthy aging, appetite consistency, or recovery after activity? Then choose one change at a time, and track it. This is how you avoid the common trap of adding three products and learning nothing.
In that context, nicotinamide riboside for cats can be a reasonable consideration, but it should sit inside a broader plan that includes diet quality, hydration, and comfort. The best plans are boring in the best way: consistent and measurable.