NAD+
Quick facts
- Researched for
- Energy, fatigue, mental clarity, focus, recovery and longevity
- Route or form
- Injection
- Evidence so far
- The one human finding tested a NAD+ building block; the rest are reports and views.
- Not established
- Human studies have not yet shown that injected NAD helps focus, health or long life.
- Commonly researched
- 25 to 50 mg, two to three times per weekPractitionerSee every range
- Where to get it
- At our partner, US Precision Peptides.Go to Next step
By the Learn Peptides editorial team · Updated · How We Research
What people are researching it for
People are researching NAD+ for energy, fatigue, mental clarity, focus, recovery, and longevity.
Energize. Restore. Recharge.
...though it is not technically a peptide.
- What is NAD+?
- Checklist: Not technically a peptide
- How does it work?
- Not written out in this text version.
- Common research use cases
- Not written out in this text version.
- How it's used in research
- Route: IV / slow infusion
- Route: Subcutaneous
- Route: Intramuscular
- Common dosing: Lower doses more frequently
- Common dosing: Morning use is common
- Common dosing: Slow administration may improve comfort
- Common dosing: Protocols are individualized
- Often combined with: Sleep & recovery work
- Often combined with: Nutrition / exercise support
- Often combined with: NMN or NR research
- Often combined with: Other longevity-focused compounds
- There is no standardized dose or protocol. Research use should be thoughtful, tracked, and adjusted based on individual response.
- What users report
- Keep in mind: Results vary widely
- Keep in mind: Many users report little or no effect
- Keep in mind: Burning / nausea / flushing are common complaints
- Keep in mind: Quality and tolerability matter
- Key takeaway
- Its strongest anecdotal signal is better energy and mental clarity, but responses are highly individual and the human outcome evidence is still limited.
- The bottom line
- NAD+ has a strong biological rationale and intriguing anecdotal support for energy and focus, but high-quality human outcome data remain limited. Use a quality-first, research-focused approach and keep expectations realistic.
Reasons people look into NAD+. An interest is not a promise that it works.
- Body composition & performance
- Longevity & energy
- Cognitive & mood
Some report more energy or a clearer head for a short while; others notice little.
Community reports
Some people describe a noticeable lift in energy or mental clarity after NAD+ injections or infusions. Others report little benefit, and the effect is often described as short-lived.
Community reports
Almost all firsthand reports found are for self-injection, not IV clinic drips, people use it for energy and focus, and nearly everyone who mentions the injection itself says it stings unless buffered. IV drip experiences could not be confirmed with firsthand reports in the sources reviewed.
Small human studies looked at how IV NAD is handled and tolerated.
Small human studies have looked at how IV NAD moves through the body and how well it is tolerated. The basic role of NAD in cell energy is well established.
A coenzyme every cell needs to make energy and repair DNA, discussed for energy and focus, especially during travel, illness, or heavy training.
What this is based on
- Human researchStudied in people for this or a related question.
- Community reportsWhat people describe noticing. Not proof of cause.
- Industry perspectiveCommentary from practitioners and the industry, based on experience. Not a study.
- Learn Peptides explanationOur own plain-English summary of the sources. It is not a source itself.
Human studies have not yet shown that injected NAD helps focus, health or long life.
Human studies have not yet shown broad benefits from injected NAD for wellness, focus, or longevity.
Safety notes
Tested in people. How many took part, for how long, and who they were still matter.
- You have trouble breathing or wheezing, or your face, lips, tongue or throat swell.
- You get hives away from the injection site, or feel severely dizzy or faint.
For these signs, call 911 or your local emergency number.
- Stop and get medical help now for shortness of breath or chest symptoms. Stop and contact a doctor for an injection-site infection. For an allergic reaction, use the signs above. Industry perspective
- Redness spreads, or heat, swelling or pain keeps growing where you injected.
- A lump keeps growing or does not go away, or you see pus or red streaks.
- You have a fever or chills, or feel sick all over.
- Cancer, now or in the past. The cited commentary says to avoid it with active cancer, since some tumors also use NAD+ for energy. In one mouse study, NR (a building block of NAD+) raised breast cancer rates and its spread to the brain.
- PARP inhibitor therapy (used in cancer treatment): mechanistically counterproductive to combine with NAD+. Industry perspective
- Pregnancy or breastfeeding: avoid, no data. Industry perspective
- Liver disease (cirrhosis, fatty liver): high chronic nicotinamide carries hepatotoxicity concerns. Industry perspective
- Injection site burning or welts can happen, dilute more to reduce stinging. Industry perspective
- IV, IM, and sometimes subQ can cause chest tightness, cramping, nausea, flushing, and anxiety, especially at higher doses. Industry perspective
- IM injection tends to raise resting heart rate short-term more than subQ. Industry perspective
- Theoretical methylation concern from clearing excess nicotinamide; the cited commentary describes taking TMG as a precaution and suggests watching homocysteine. Industry perspective
Questions to bring to your doctor
Only for the conditions this page cautions about. Bring this page with you.
- I have or had cancer. Should I avoid NAD+, and what would you watch for?
Shows 4 practitioner ranges and 1 study amount, 2 of them by IV drip.
Commonly researched ranges, and how they were measured.
Commonly researched range for NAD+
25 to 50 mg
two to three times per week · Injection
Practitioner
All 5 ranges in our record
Each one is labeled with where it comes from. They are different ways of using NAD+, not steps to follow in order.
Standard, starting dose
Practitioner- Amount per dose
- 15 to 25 mg
- How often
- Two to three times per week
- Typical schedule
- Not stated
- Route
- Injection
Working dose, lower end
Practitioner- Amount per dose
- 25 to 50 mg
- How often
- Two to three times per week
- Typical schedule
- 8-12 weeks if used for post-viral recovery
- Route
- Injection
Working dose, upper end
Practitioner- Amount per dose
- 50 to 100 mg
- How often
- Two to three times per week
- Typical schedule
- 8-12 weeks if used for post-viral recovery
- Route
- Injection
IV infusion, addiction recovery protocol
Practitioner- Amount per dose
- 500 to 1,000 mg
- How often
- Daily
- Typical schedule
- 10-14 days, clinical IV setting
- Route
- Injection
Single 6-hour IV infusion
StudyPK study- Amount per dose
- 750 mg
- How often
- Single 6-hour infusion (about 2 mg/min)
- Typical schedule
- Not stated
- Route
- Injection
This is the amount a study used. It is not a dosing instruction for other products.
From our visual summary
Community reports
Community reports, from the Learn Peptides visual summary. These lines sit beside the ranges above and are not merged with them.
- Common dosing
- Lower doses more frequently
- Morning use is common
- Slow administration may improve comfort
- Schedules are individualized
There is no standard dose. Track how you respond, and change one thing at a time.
These ranges were last reviewed Sep 2026.
Check your syringe math with your own numbers.
Not a peptide, it is a helper molecule every cell needs to make energy.
NAD+ (nicotinamide adenine dinucleotide) isn't a peptide. It's a coenzyme built from vitamin B3 that every cell uses to make energy, repair DNA, and run so-called longevity genes. Levels are often discussed as falling with age, inflammation and alcohol, but how much they fall with age in people is not settled. It's given as an injection.
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