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NAD+ Therapy Guide: Benefits, Dosing, and What to Expect

Updated May 15, 2026 • 7 min read

What is NAD+?

NAD+ (nicotinamide adenine dinucleotide) is a coenzyme found in every cell in your body. It's essential for two critical processes:

  • Energy production: NAD+ converts food into usable ATP (cellular fuel) inside mitochondria
  • Cellular repair: NAD+ activates sirtuins — proteins that regulate DNA repair, inflammation, and aging pathways

Problem: NAD+ levels decline 50% by age 40 and 80% by age 60. Lower NAD+ = less energy, slower recovery, accelerated aging. NAD+ therapy replaces what your body no longer produces efficiently.

How NAD+ Therapy Works

NAD+ therapy uses either direct NAD+ injections or NAD+ precursors (like NMN, NR) that your body converts to NAD+. Flow uses subcutaneous NAD+ injections — faster absorption than oral supplements, more convenient than IV drips.

Once injected, NAD+ enters cells and:

  1. Boosts mitochondrial energy output (you feel it within 2-3 days)
  2. Activates SIRT1-7 proteins (DNA repair, metabolic regulation)
  3. Supports PARPs (enzymes that fix DNA damage)
  4. Reduces oxidative stress and inflammation

Proven Benefits

1. Energy & Cognitive Clarity

Most patients report noticeable energy increases within the first week. NAD+ fuels your mitochondria — the power plants of every cell. More NAD+ = more ATP = sustained energy without stimulants.

Cognitive effects: sharper focus, faster recall, reduced brain fog. NAD+ supports neuronal health and neurotransmitter synthesis.

2. Athletic Recovery & Muscle Endurance

NAD+ speeds muscle recovery post-workout by enhancing mitochondrial repair and reducing lactic acid buildup. Athletes use NAD+ to train harder and recover faster.

3. Metabolic Health

NAD+ improves insulin sensitivity and supports healthy blood sugar regulation. Studies show NAD+ precursors reduce markers of metabolic syndrome.

4. Longevity & Anti-Aging

NAD+ activates sirtuins — the same proteins activated by caloric restriction and fasting (both proven longevity interventions). Higher NAD+ = slower cellular aging, better DNA repair, reduced inflammation.

Animal studies show NAD+ supplementation extends lifespan 10-30%. Human longevity data is still emerging, but biomarker improvements (lower inflammatory markers, improved telomere length) are promising.

5. Skin Health

NAD+ supports collagen synthesis and reduces oxidative damage to skin cells. Many patients report improved skin tone and reduced fine lines after 8+ weeks.

Flow NAD+ Protocol

Dose: 100 mg subcutaneous injection, 3× per week

Duration: 12 weeks active dosing, followed by optional 4-week maintenance phase

Timing: Morning injections recommended (NAD+ boosts energy — avoid evening doses that may interfere with sleep)

Cost: $600 for 12 weeks (all-inclusive — medication, supplies, NP supervision)

What to Expect: Week-by-Week

Week 1-2: Energy Ramp-Up

Most patients notice increased energy and mental clarity within 3-5 days. Some feel "wired" initially — this stabilizes by week 2. Sleep quality may improve (deeper REM cycles).

Week 3-6: Peak Effects

Energy levels stabilize at a higher baseline. Cognitive sharpness, workout recovery, and mood improvements become consistent. Skin may appear brighter (increased cellular turnover).

Week 7-12: Maintenance & Long-Term Benefits

Benefits plateau. Energy remains elevated. Long-term anti-aging effects (DNA repair, inflammation reduction) continue accumulating. Many patients extend to 16-20 weeks for sustained results.

Side Effects & Safety

NAD+ is well-tolerated. Rare side effects:

  • Mild nausea (5-10% of patients, usually subsides after first 2 weeks)
  • Injection site redness or itching
  • Temporary insomnia if dosed too late in the day

NAD+ is not FDA-approved for anti-aging or energy optimization. It's prescribed off-label under Section 503A pharmacy compounding for individual patient use. Flow's NP screens for contraindications before prescribing.

NAD+ vs Oral Supplements (NMN, NR)

Oral NAD+ precursors (nicotinamide mononucleotide, nicotinamide riboside) are popular but less efficient:

  • Bioavailability: Oral NMN/NR has 30-50% absorption. Injectable NAD+ has near 100%.
  • Speed: Oral supplements take 4-8 weeks to show effects. NAD+ injections work in 3-5 days.
  • Dose control: Injections deliver precise therapeutic doses. Oral supplements vary widely in quality and potency.

If you've tried oral NAD+ boosters without results, injectable NAD+ is worth considering.

Who Should Use NAD+ Therapy?

  • Anyone over 35 experiencing energy decline, brain fog, or slow recovery
  • Athletes seeking faster recovery and improved endurance
  • Biohackers optimizing for longevity and cellular health
  • Patients with metabolic concerns (pre-diabetes, insulin resistance)
  • Anyone interested in science-backed anti-aging interventions

Stacking NAD+ with Other Peptides

NAD+ pairs well with:

  • Semaglutide or Tirzepatide: NAD+ boosts energy while GLP-1s reduce appetite (great for weight loss + sustained activity levels)
  • BPC-157: NAD+ for cellular energy + BPC-157 for tissue repair (ideal for athletes)
  • Glutathione: NAD+ + glutathione = potent anti-aging stack (both reduce oxidative stress)

Flow's NP can design custom multi-peptide protocols based on your goals.

Next Steps

Curious if NAD+ fits your health goals? Take our 2-minute peptide quiz for a personalized recommendation. Or book a free 15-minute consult with our NP to discuss your energy levels, recovery timeline, and optimization goals.

Flow programs: NAD+ Therapy ($600/12 weeks) · All programs →