NAD+ shots may support cellular energy pathways because NAD+ helps mitochondria make ATP and helps enzymes involved in DNA repair and stress response. But human evidence for injectable NAD+ benefits remains limited. Most longevity claims come from cell, animal, or oral-precursor research, not proof that NAD+ shots extend human lifespan 1 2.
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See if you qualify →What are NAD+ shots?
NAD+ shots are injections containing nicotinamide adenine dinucleotide, usually used in wellness and longevity settings. Compounded NAD+ products are not FDA-approved 8. NAD+ is a coenzyme found in every cell. It shifts between NAD+ and NADH as it carries electrons through metabolic reactions, including reactions connected to the mitochondrial electron transport chain and ATP production 1.
What NAD+ stands for
NAD+ stands for nicotinamide adenine dinucleotide. It is made from forms of vitamin B3, including niacin and related nutrients. NADH is its reduced form; together, NAD+/NADH redox cycling helps cells transfer energy from food into usable chemical energy 1.
How injections differ from other NAD+ approaches
| Approach | What it delivers | What human evidence can tell us |
|---|---|---|
| NAD+ injection | Direct injectable NAD+ | Human clinical evidence is limited; benefits, ideal schedule, and long-term outcomes are not established 2 3. |
| NAD+ nasal spray | NAD+ delivered through the nose | Clinical outcome research is limited; it should not be assumed equivalent to injection or oral products 2 3. |
| Oral precursors | Compounds such as NR or NMN that can raise NAD+-related biomarkers | Several human trials show biomarker changes, but clinical benefits remain inconsistent or uncertain 5 6 7. |
| IV infusion | NAD+ administered into a vein | This route is different from a shot; direct evidence for broad wellness or longevity outcomes remains limited 2. |
Why people consider NAD+ for energy and longevity goals
People often ask about NAD+ for energy, recovery, fatigue, brain fog, metabolism, and longevity. Those interests come from NAD+'s basic role in cells and from aging research, where NAD+-related pathways have been studied in animals and cells. That is a reasonable topic to discuss with a clinician, but it is not the same as proven symptom relief or proven anti-aging benefit in humans 3 4.
What benefits of NAD+ shots are biologically plausible?
NAD+ has biologically plausible roles in energy metabolism and cellular stress response. Its role in ATP production is well established in cell biology, but a plausible mechanism is not proof that NAD+ shots improve how a person feels or functions 1 2.
Cellular energy, mitochondria, and ATP
Mitochondria use electron-transfer reactions to help produce ATP, a molecule cells use for energy-demanding work. NAD+/NADH redox cycling participates in these reactions. This is cell and biochemical evidence, not evidence that an NAD+ injection reliably improves daily energy in people 1.
DNA repair and cellular stress response
PARP enzymes use NAD+ when responding to DNA damage, while sirtuins are NAD+-dependent enzymes involved in metabolic and stress-response signaling. These pathways are central to aging biology research, but their existence does not establish that adding NAD+ extends lifespan or reverses age-related conditions in humans 1 4.
What animal research means—and does not mean
Animal studies of NAD+-boosting strategies have reported changes in mitochondrial, metabolic, and tissue-repair markers. Animal findings can guide future trials, but they cannot confirm human benefits, disease prevention, or lifespan extension 3 4.
What does human research actually show about NAD+ therapy?
Human research has not established broad clinical benefits for injectable NAD+. Most published human intervention studies involve oral NR or NMN, not NAD+ shots, and biomarker increases have not consistently translated into meaningful health outcomes 2 3.
What oral precursor trials have found
In randomized human studies, NR has increased blood NAD+-related measures and has generally been tolerated over short study periods 5 6. In a 2021 randomized trial of 25 postmenopausal women with prediabetes, NMN improved insulin-stimulated muscle insulin sensitivity, but that specific finding does not show that NAD+ shots improve weight, energy, cognition, or longevity 7.
Why biomarkers are not enough
A biomarker can show that a compound changed a biological pathway. It cannot, by itself, show that someone will have more energy, less fatigue, better recovery, less brain fog, or a longer life. Those claims need well-designed human trials measuring symptoms, function, disease outcomes, and long-term safety 2 3.
Do NAD+ shots help with energy, brain fog, or recovery?
The honest answer is that human evidence for injectable NAD+ symptom benefits is limited. NAD+ participates in energy-related cell pathways, but that does not make it a proven treatment for fatigue, brain fog, or exercise recovery 1 2.
Persistent fatigue or cognitive changes can have many causes, including sleep problems, anemia, thyroid disease, medication effects, mood disorders, infection, and metabolic conditions. A clinician can help decide whether evaluation for an underlying cause should come before any wellness-focused treatment discussion 2 3.
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Discuss NAD+ goals with a licensed provider
Chia offers compounded NAD+ injections and nasal spray after an online health questionnaire and licensed-provider review. A prescription requires a medical evaluation and is not guaranteed. Compounded medications are not FDA-approved; providers determine whether treatment is clinically appropriate.
Do NAD+ shots make you lose weight?
No good human evidence shows that NAD+ shots are a proven weight-loss medication. NAD+ is involved in metabolism, but involvement in metabolism is not evidence that injectable NAD+ causes clinically meaningful fat loss 2 3.
For people discussing weight-related goals, NAD+ should not be presented as a replacement for evidence-based nutrition, activity, sleep, medical evaluation, or clinician-guided obesity care. At Chia, NAD+ may be included with a choice of GLP-1 in the Weight + Energy protocol, but the components have different purposes and should be evaluated individually by a licensed provider.
How long do NAD+ shots last, and what are the downsides?
There is no well-established answer for how long an NAD+ shot “lasts” because direct injectable NAD+ studies have not defined a reliable symptom timeline. Long-term use remains an evidence gap, and a provider should determine whether any form, dose, or schedule is appropriate for an individual patient 2 3.
Potential side effects and safety questions
Injection treatments can cause local discomfort, redness, or swelling. Reviews of NAD-targeting therapies also identify nausea, headache, flushing, fatigue, patient selection, dosing, and long-term safety as areas where more evidence is needed 2 3.
People who are pregnant or breastfeeding, have active cancer, significant liver or kidney disease, uncontrolled cardiovascular disease, acute illness, or complex medical histories should discuss risks with a clinician before considering NAD+ therapy 2 3. Avoid products from no-prescription research-chemical sellers; sterile preparation, licensed prescribing, and pharmacy oversight matter for injectable products.
Are NAD+ shots FDA approved?
Compounded NAD+ products are not FDA-approved. Compounded medications are not FDA-approved products, which means the FDA has not evaluated the compounded formulation for safety, effectiveness, or quality in the way it evaluates an approved drug product 8.
How does NAD+ care work at Chia?
At Chia, NAD+ is available as a compounded injection or nasal spray after licensed-provider review. Plans currently start at $119 per month for nasal spray and $179 per month for injection. Our providers review a short online health questionnaire, prescribe only when clinically appropriate, guide treatment over time, and patients can message their care team through the portal.
| Chia NAD+ form | Current starting price | Practical consideration |
|---|---|---|
| NAD+ nasal spray | From $119/mo | A non-injection option; clinical outcome research is limited. |
| NAD+ injection | From $179/mo | An injectable option; clinical outcome research is limited and provider guidance is required. |
Medications are compounded in the United States by state-licensed 503A compounding pharmacies and shipped to the patient's door. NAD+ is also included in Chia's Foundation Longevity protocol, Glow protocol, and Weight + Energy protocol. Those protocols combine treatments, so a provider should review goals, medications, health history, and the limited evidence for each component rather than assuming a combination is better.
How should you decide whether NAD+ shots are worth discussing with a clinician?
A useful discussion starts with a clear goal and an honest look at the evidence. Ask what outcome you hope to change and how it would be measured. It is also reasonable to ask what evidence exists for the specific route, what side effects are possible, what alternatives exist, and what follow-up is included 2 3.
- Ask whether fatigue, brain fog, or reduced exercise tolerance needs medical evaluation first.
- Ask whether the evidence is from direct NAD+ injections, oral precursors, animal models, or cell experiments.
- Be cautious of promises about reversing aging, guaranteed energy, rapid weight loss, or longer lifespan; these claims go beyond current human evidence.
- Use a licensed clinician and a state-licensed pharmacy rather than an unverified seller.
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Start with a clinician-reviewed NAD+ discussion
If you want to discuss NAD+ for energy or longevity goals, start with Chia's online evaluation. Our licensed providers review eligibility and prescribe only when clinically appropriate; a prescription is not guaranteed. Learn about NAD+ options at Chia. Compounded medications are not FDA-approved.
References
- 1.Lautrup S, Sinclair DA, Mattson MP, Fang EF. NAD+ in Brain Aging and Neurodegenerative Disorders. Cell Metabolism, 2019.
- 2.Katsyuba E, Romani M, Hofer D, Auwerx J. NAD+ homeostasis in health and disease. Nature Metabolism, 2020.
- 3.Covarrubias AJ, Perrone R, Grozio A, Verdin E. NAD+ metabolism and its roles in cellular processes during ageing. Nature Reviews Molecular Cell Biology, 2021.
- 4.Rajman L, Chwalek K, Sinclair DA. Therapeutic Potential of NAD-Boosting Molecules: The In Vivo Evidence. Cell Metabolism, 2018.
- 5.Martens CR, Denman BA, Mazzo MR, et al. Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults. Nature Communications, 2018.
- 6.Elhassan YS, Kluckova K, Fletcher RS, et al. Nicotinamide Riboside Augments the Aged Human Skeletal Muscle NAD+ Metabolome and Induces Transcriptomic and Anti-inflammatory Signatures. Cell Reports, 2019.
- 7.Yoshino M, Yoshino J, Kayser BD, et al. Nicotinamide mononucleotide increases muscle insulin sensitivity in prediabetic women. Science, 2021.
- 8.U.S. Food and Drug Administration. Compounding and the FDA: Questions and Answers. FDA, 2024.
About this article
Chia Health Editorial Team — Evidence-reviewed health education
This article is for educational purposes only and is not a substitute for individualized medical advice. Talk to a licensed clinician before starting, stopping, or changing any prescription.
AI tools may assist with research and drafting. Chia's editorial team reviews source use, clarity, treatment information, and safety framing before publication. A clinician is named only after explicit sign-off. Read our editorial standards.
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