NAD+
Nicotinamide adenine dinucleotide (NAD+)
What is NAD+?
NAD+: Nicotinamide adenine dinucleotide, an essential coenzyme for cellular energy metabolism and substrate for sirtuins/PARPs/CD38. The sources cited here most often discuss it for: Raises NAD+ levels; Mitochondria and sirtuins, lab data; Energy and focus, anecdotal. Evidence label: Early human.
- Type
- Not a peptide
- Family
- Longevity & Mitochondria
- Evidence label
- Early human (3 of 5)
- Regulatory status
- In October 2024 FDA reminded compounders that food-grade NAD+ is not suitable for making sterile intravenous products without appropriate processing, and noted adverse event reports after NAD+ injections, including severe chills, shaking, vomiting and fatigue, consistent with excessive endotoxin levels.
- Goals discussed
- Longevity & Cellular Aging, Energy & Endurance, Focus & Cognition, Calm & Mood
- Also called
- nicotinamide adenine dinucleotide, Beta-Nicotinamide Adenine Dinucleotide, NAD, NAD+ IV
- Last reviewed
- 2026-10-11
- Nicotinamide adenine dinucleotide, an essential coenzyme for cellular energy metabolism and substrate for sirtuins/PARPs/CD38; levels decline with age; sold as IV/subcutaneous injections (not FDA-approved as a drug for any indication) or raised via oral precursors NMN/NR.1
NAD+ is a coenzyme built from two nucleotides, not a peptide; it is listed here because clinics and peptide sellers commonly offer it alongside peptide therapies.
Regulatory status In October 2024 FDA reminded compounders that food-grade NAD+ is not suitable for making sterile intravenous products without appropriate processing, and noted adverse event reports after NAD+ injections, including severe chills, shaking, vomiting and fatigue, consistent with excessive endotoxin levels. 2
Age-associated decline in NAD+ levels has generated interest in NAD+-augmenting strategies; however, recent large-scale human data indicate that whole-blood NAD+ concentrations do not decline with healthy aging per se.
Abstract of a 2026 narrative review; the authors conclude evidence is insufficient to support routine clinical or wellness IV NAD+ use.
What is NAD+ researched for?
The three outcomes most discussed for NAD+ in the sources below, as those sources report them. humanpeptides.fyi makes no claims of its own: a listed benefit can be unproven or can have failed in trials, and the label on each line says which.
What do researchers and users say about NAD+?
FDA has received adverse event reports following use of NAD+ injectable drugs, including severe chills, shaking, vomiting and fatigue with some requiring medical treatment.
FDA notice about compounded IV NAD+ made from food-grade ingredients; FDA said the reactions were consistent with endotoxin contamination.
My eyes feel more wide open and brain feels like it's working.
Single forum self-report shortly after starting; uncontrolled and possibly placebo.
What side effects of NAD+ are reported?
- IV NAD+ caused transient cramping, nausea/vomiting, diarrhea, tachycardia, chest/throat pressure during infusionretrospective pilot9
- Subcutaneous injections: intense flushing, lightheadedness, nausea, headaches, injection-site discomfortanecdotal Reddit1011
- Severe chills, shaking, vomiting and fatigue, sometimes needing medical treatment, consistent with endotoxin contamination of IV products compounded from food-grade NAD+.FDA adverse event reports2
- HDL (good) cholesterol fell significantly over 30 days in people receiving NAD+ IV in a small retrospective study.retrospective human pilot9
- High extracellular NAD+ may act as a danger signal to the immune system and have proinflammatory effects.theoretical, cited in study background9
- No long-term safety data exist for IV NAD+.narrative review8
What do peptide guides say about NAD+?
- Seek Peptides Seek Peptides stresses that NAD is not a peptide but a coenzyme made of nucleotides, and that the label NAD peptides really refers to peptides said to support NAD+-dependent pathways. 12
- Frontiers in Aging A 2026 review finds human evidence for IV NAD+ is sparse, mostly small uncontrolled studies and case reports, and judges it insufficient to support routine clinical or wellness use. 8
- Frontiers in Aging In a 2026 real-world comparison, NAD+ IV caused moderate to severe gut symptoms, faster heart rate and chest pressure that stretched infusions to about 97 minutes versus 37 for nicotinamide riboside IV. 9
- Frontiers in Aging Neuroscience A 2019 pilot found infused NAD+ was rapidly and completely cleared from plasma for at least the first two hours, with no measurable rise in blood NAD+ or its metabolites during that time. 13
What does the research say, system by system?
Body & tissues2
Hormones & physiology2
Cells & mitochondria1
Brain, mood & sleep1
- Some users report mental clarity/focus after injectionsanecdotal6
Weight & metabolism1
- NMN meta-analyses show no consistent effect on body weight, glucose, insulin resistance or lipidshuman RCT meta-analysis17
Muscle1
- Meta-analysis: NMN/NR show no consistent improvement in skeletal muscle mass or function15
Also notable1
- No established anti-aging/longevity efficacy in humans despite mechanistic rationale4
How strong is the evidence for NAD+?
Strong mechanistic/animal rationale; small human trials show it raises NAD+ but inconsistent clinical benefits; injectable NAD+ mostly anecdotal
Small, short, old, unblinded or single-group human studies. How tiers work
Questions about NAD+
What is NAD+?
Nicotinamide adenine dinucleotide, an essential coenzyme for cellular energy metabolism and substrate for sirtuins/PARPs/CD38. NAD+ is a coenzyme built from two nucleotides, not a peptide; it is listed here because clinics and peptide sellers commonly offer it alongside peptide therapies.
Is NAD+ FDA-approved?
In October 2024 FDA reminded compounders that food-grade NAD+ is not suitable for making sterile intravenous products without appropriate processing, and noted adverse event reports after NAD+ injections, including severe chills, shaking, vomiting and fatigue, consistent with excessive endotoxin levels.
What is NAD+ researched for?
The sources cited on this page most often discuss three outcomes: Raises NAD+ levels; Mitochondria and sirtuins, lab data; Energy and focus, anecdotal. Each line above shows what the source reports and how strong that evidence is.
What side effects of NAD+ are reported?
Reported in the cited sources: IV NAD+ caused transient cramping, nausea/vomiting, diarrhea, tachycardia, chest/throat pressure during infusion; Subcutaneous injections: intense flushing, lightheadedness, nausea, headaches, injection-site discomfort; Severe chills, shaking, vomiting and fatigue, sometimes needing medical treatment, consistent with endotoxin contamination of IV products compounded from food-grade NAD+. The list is not complete, and few listed risks does not mean a compound is safe.
How strong is the evidence for NAD+?
Evidence label: Early human. Strong mechanistic/animal rationale; small human trials show it raises NAD+ but inconsistent clinical benefits; injectable NAD+ mostly anecdotal.
What else is NAD+ called?
Names used for it include nicotinamide adenine dinucleotide, Beta-Nicotinamide Adenine Dinucleotide, NAD, NAD+ IV.
Does humanpeptides.fyi recommend NAD+?
No. humanpeptides.fyi makes no claims and no recommendations of its own. It summarizes and links to what others have published and posted. Nothing here is medical advice; talk to a licensed clinician.