Longevity & Anti-Aging

NAD+

Nicotinamide Adenine Dinucleotide

NAD+ acts as a co-substrate for SIRT1–7, supporting epigenetic control and DNA repair, and for PARP enzymes in base-excision repair. It also serves as a cofactor for mitochondrial Complex I in the electron-transport chain and modulates pathways involving CD38 and SARM1.

Not medical advice. Educational reference only.

Route
Intravenous; Subcutaneous injection
Storage
Keep at 2–8°C after mixing and use within 28 days.

What is NAD+?

NAD+, or nicotinamide adenine dinucleotide, is a coenzyme essential to living cells. It supports cellular respiration, repair of DNA and sirtuin-dependent control of gene expression. Levels fall markedly with age. Intravenous and subcutaneous administration are used in clinical settings concerned with aging, metabolism, cognition and addiction recovery. NMN and NR, which cells convert into NAD+, are available as oral supplements.

Research schedules name a low starting amount and a titrated standard amount without numeric doses. Frequency depends on the protocol, and the route varies.

Responses differ between individuals. Begin with the lowest dose and observe your response carefully. Speak with your clinician before use and report unexpected symptoms. Human adverse effects are not fully characterized for every compound.

Mechanism of action

NAD+ acts as a co-substrate for SIRT1–7, supporting epigenetic control and DNA repair, and for PARP enzymes in base-excision repair. It also serves as a cofactor for mitochondrial Complex I in the electron-transport chain and modulates pathways involving CD38 and SARM1.

Targets: CD38 · SARM1 · Sirtuins (SIRT1–7) · Mitochondrial ETC Complex I · PARP enzymes

Research indications

  • Cellular Longevity

    Moderate

    Investigations assess telomere length and the processes associated with cellular senescence.

  • Hormonal Balance

    Moderate

    Potential hormonal effects are being considered in the context of aging.

  • Cognitive Aging

    Limited

    Preliminary investigations address preservation of cognition as people age.

Interactions

  • Medications

    Caution

    Ask your prescriber to review any medication before combining treatments.

  • BPC-157

    Compatible
  • NAD+

    Compatible
  • Vitamin D

    Compatible

How to reconstitute and inject

Diluent: Use bacteriostatic water; avoid saline because precipitation may occur.

  1. Let the refrigerated vial stand at room temperature for 15–20 minutes before preparation.
  2. Disinfect the stopper using an alcohol swab, then wait until it has dried fully in the air.
  3. Measure the calculated quantity of bacteriostatic water with a sterile syringe. Use only this diluent; avoid saline because precipitation may occur.
  4. Add the water gradually against the inner vial wall. Keep the stream away from the powder itself.
  5. Rotate the vial with a gentle swirling motion. Do not shake forcefully, because this can degrade the contents.
  6. Wait 2–3 minutes for the powder to dissolve completely, and check that the liquid is transparent and has no color.
  7. Use an insulin syringe to withdraw the calculated amount for injection beneath the skin.
  8. Inject in the thigh, abdomen or upper arm. Change the injection location each time to help prevent lipodystrophy.
  9. Refrigerate the mixed solution at 2–8°C. Use it within a maximum of 28 days after preparation.

What to expect

Week 1–2
During the first 1–2 weeks, early effects may accompany an adjustment period. Watch for adverse reactions.
Week 2–4
By weeks 2–4, the main effects may start becoming apparent. Make dose changes only according to your clinician’s guidance.
Week 4–8
During weeks 4–8, the principal effects are expected to be established. Review your progress with your clinician.
Week 8+
From week 8 onward, review the results and decide with your clinician whether to continue, cycle or change the dose.

Side effects and safety

  • Mild pain, bruising or redness around the injection location
  • Possible allergic reaction; stop use if hives or a rash develops

Frequently asked questions

What roles does NAD+ have in cells?

Cells use NAD+ to generate ATP from nutrients, repair damaged DNA and regulate genes through sirtuins. Between ages 40 and 70, NAD+ levels decline by 40–50%. Supplementation is being investigated for metabolism, cognition, addiction recovery and aging.

How do intravenous NAD+ and oral precursors differ?

Intravenous administration enters the bloodstream directly and bypasses intestinal absorption. Effects may be felt during infusion as levels rise rapidly. Oral NMN and NR require cellular conversion but are convenient and less costly for maintenance. Longevity protocols often combine occasional intravenous sessions with daily oral precursor use.

Which potential benefits are under investigation?

Research and clinical observations suggest possible improvements in energy, fatigue, mental clarity, addiction recovery, metabolic measurements and inflammatory markers. Human investigations include alcohol addiction recovery and intravenous protocols for Parkinson’s disease. Aging-related benefits in animals have not translated into conclusive longevity benefits in humans.

References

  1. NAD(+) metabolism and its roles in cellular processes during ageing. (2021)

  2. Safety and efficacy of NAD+ supplementation: a systematic review (2021)

  3. NAD+ intermediates: The biology and therapeutic potential (2018)

  4. Nicotinamide Adenine Dinucleotide in Aging Biology: Potential Applications and Many Unknowns. (2023)

  5. NAD⁺ in aging, metabolism, and neurodegeneration. (2015)

  6. NAD+ and sirtuins in aging and disease. (2014)

  7. The Safety and Antiaging Effects of Nicotinamide Mononucleotide in Human Clinical Trials: an Update. (2023)

  8. Yoshino J et al. — NMN metabolism (Cell 2021) (2021)

  9. NAD+ studies on ClinicalTrials.gov (2024)