By Brandie Ruark, FNP-C, Peak Health & Fitness

At Peak Health & Fitness, we focus on helping our patients improve their health at the root level — not just masking symptoms. One therapy that has gained attention in the wellness and longevity space is NAD+.

If you’ve been feeling more fatigued than usual, struggling with brain fog, or looking to support healthy aging and metabolic function, you may have heard about NAD+ and wondered what it actually does. Let’s break it down in a simple, honest way.

What Is NAD+?

NAD+ (nicotinamide adenine dinucleotide) is a coenzyme found in every cell of your body. It plays a key role in:

  • Cellular energy production
  • Mitochondrial function
  • Metabolic efficiency
  • Cellular repair pathways
  • Nervous system health

Your cells use NAD+ to convert nutrients into usable energy (ATP). Without enough NAD+, that process becomes less efficient. As we age, NAD+ levels naturally decline. Stress, poor sleep, inflammation, and metabolic dysfunction can accelerate that decline. For many people, this shows up as:

  • Persistent fatigue
  • Slower workout recovery
  • Brain fog
  • Reduced resilience to stress
  • Hitting plateaus during weight loss

What Are the Benefits of NAD+?

At Peak Health & Fitness, we offer NAD+ injections as part of a medically guided wellness plan. When appropriate, NAD+ therapy may support:

  • Increased cellular energy
  • Improved mental clarity
  • Better recovery from exercise
  • Support during weight loss programs
  • Healthy aging pathways
  • Improved metabolic resilience

It’s important to understand that NAD+ is not a stimulant. It does not act like caffeine or a temporary energy booster. Instead, it supports your body’s natural energy systems at the cellular level.

Why Choose NAD+ Injections Instead of Oral Supplements?

When NAD+ is given by injection, it bypasses digestive breakdown and enters circulation more directly. This may allow for:

  • More efficient absorption
  • Higher bioavailability
  • Faster noticeable effects in some individuals

For patients who are already optimizing nutrition, hormones, and metabolic health, NAD+ injections can be an additional layer of support.

Who Is a Good Candidate for NAD+ Injections?

You may be a good candidate for NAD+ therapy if you:

  • Feel fatigued despite adequate sleep
  • Are on a medically supervised weight loss program
  • Want to support healthy aging
  • Train regularly and want better recovery
  • Experience high levels of stress
  • Are optimizing hormones and want improved cellular energy

Many of our patients using GLP medications or working through metabolic shifts find NAD+ helpful for supporting energy and recovery. We always evaluate each patient individually before recommending therapy.

Who Is Not a Good Candidate?

NAD+ injections may not be appropriate for individuals who:

  • Are seeking a quick stimulant-like energy fix
  • Have uncontrolled medical conditions that require stabilization
  • Are pregnant or breastfeeding
  • Have certain active cancers (requires individual evaluation)
  • Prefer not to use injectable therapies

Like all therapies we offer at Peak Health & Fitness, NAD+ is part of a bigger strategy — not a stand-alone solution.

NAD vs. NMN: What’s the Difference?

You may also hear about NMN (nicotinamide mononucleotide), which is often marketed for similar benefits. Here’s how they compare:

NAD+ Injections

  • Deliver the active NAD+ molecule directly
  • Given by injection (subcutaneous and/or intramuscular)
  • Bypass digestive conversion
  • May produce faster or more noticeable effects
  • Often used for cellular energy, recovery, and metabolic optimization

NMN (Oral Supplement)

  • A precursor your body converts into NAD+
  • Taken as a capsule or powder
  • Requires absorption and enzymatic conversion
  • Generally works more gradually
  • Often used for long-term foundational support

Think of it this way:

NAD+ injections help “replenish the tank” more directly. NMN helps your body “build more fuel” over time. Some patients may benefit from one or the other. The right choice depends on goals, health history, and preference.

Our Approach at Peak Health & Fitness

We do not believe in quick fixes. Before recommending NAD+ injections, we evaluate:

  • Hormone balance
  • Nutritional status
  • Metabolic markers
  • Stress levels
  • Sleep patterns
  • Current medications

NAD+ works best when layered on top of:

  • Adequate protein intake
  • Resistance training
  • Blood sugar stability
  • Optimized thyroid and hormone health
  • Stress management

When the foundation is strong, cellular support therapies like NAD+ can be a powerful addition.

Interested in NAD+?

If you’re curious whether NAD+ therapy could support your energy, metabolism, or healthy aging goals, we would love to evaluate your individual situation. Schedule a consultation at Peak Health & Fitness, and we’ll determine whether NAD+ is appropriate for you.

Our goal is simple: Help you feel better, function better, and truly Reach Your Peak.