A patient of mine, mid-forties, runs a logistics company out of Grapevine. Sharp guy, the kind who built the business from two trucks into forty. His complaint wasn't pain. It wasn't even fatigue, exactly. It was that he'd read the same email three times and still couldn't tell you what it said. "My brain feels like it's buffering," he told me. That's the phrase I hear over and over, in slightly different words, from men sitting in my exam rooms.
If that hits close to home, you're in good company. NAD+ has become one of the most requested treatments in our IV and NAD+ therapy program here in Southlake, and mental clarity is the number one reason men ask about it. Not anti-aging. Not workout recovery. Focus. So let's walk through what NAD+ actually does in the brain, what the research supports, and where the marketing gets ahead of the science. I use this therapy with my own patients, and I'd rather give you the honest version than the brochure version.
What Is NAD+ and What Does It Do in Your Brain?
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme found in every living cell. It shuttles electrons during energy production, which means your mitochondria can't make ATP without it. Your brain burns roughly 20 percent of your body's total energy, so a steady NAD+ supply matters there more than almost anywhere else.
Think of NAD+ as the currency your cells spend to turn food into usable energy. Every time a mitochondrion converts glucose or fat into ATP, NAD+ is the middleman carrying electrons down the assembly line. No middleman, no energy. And neurons are the most demanding customers in the building. They fire constantly, they never really clock out, and they have almost no capacity to store fuel for later.
But energy is only part of the job. NAD+ also feeds s