Both can raise your NAD+ levels meaningfully. But the experience - how fast you feel it, how easy it fits into your day, and how much gets absorbed - is genuinely different between the two.
If you're over 40, hitting a wall with your energy despite doing "everything right," or noticing that the same diet and workout routine that worked in your 30s just doesn't produce the same results anymore - that's often NAD+ decline talking. Here's what the research actually says, and where the therapy fits into a realistic weight loss strategy.