# NAD+ and B vitamins for travel fatigue: what the evidence answers

Travel fatigue, vitamin deficiency and NAD+ marketing are different questions. A biological role alone does not establish an energy benefit.

Canonical: https://velri.co/blog/road-warrior-nad-b-vitamin-energy-support-evaluated
Publisher: Velri (https://velri.co/about)
Published: 2026-06-20
Updated: 2026-09-30
Editorial policy: https://velri.co/editorial-policy

Frequent travel can disrupt sleep, while vitamin deficiency and medical conditions can also cause fatigue. These are different problems. A product described as “energy support” does not establish which one is present or whether it will help. [1][2]

## B vitamins are not interchangeable with an energy boost

Vitamin B12 is essential to normal body function, and deficiency can cause fatigue and other symptoms. But the NIH Office of Dietary Supplements reports no performance benefit from B12 supplementation in the absence of a nutritional deficit. [2]

The distinction is practical: correcting a documented deficiency is a specific treatment goal. Trying to feel better after repeated overnight flights is a different claim and needs its own evidence.

## NAD+ has a biological role; product benefits need separate evidence

NAD+ is a coenzyme involved in energy metabolism and other cellular processes. Research into its role in aging does not establish that a particular injection will reverse jet lag, restore stamina or improve the effects of a demanding travel schedule. Studies of biology, oral precursors and injectable preparations are not interchangeable. [3]

Compounded NAD+ injections also raise product-quality questions. FDA has reported adverse events including severe chills, shaking, vomiting and fatigue after NAD+ injectable drugs, and has warned compounders about ingredients unsuitable for sterile preparation. [4]

## Start with the pattern of fatigue

An assessment can distinguish sleepiness, reduced endurance and persistent exhaustion. Travel dates, sleep opportunity, medication changes and whether fatigue continues at home give the symptom useful context. Ongoing fatigue has possible causes beyond a nutrient deficiency, including sleep disorders, anemia and thyroid disease. [1]

## Sources
[1] Fatigue: MedlinePlus Medical Encyclopedia. https://medlineplus.gov/ency/article/003088.htm
[2] Vitamin B12 - Health Professional Fact Sheet. https://ods.od.nih.gov/factsheets/VitaminB12-HealthProfessional/
[3] NAD+ metabolism and its roles in cellular processes during ageing | Nature Reviews Molecular Cell Biology. https://www.nature.com/articles/s41580-020-00313-x
[4] FDA reminds compounders to use ingredients suitable for sterile compounding   | FDA. https://www.fda.gov/drugs/human-drug-compounding/fda-reminds-compounders-use-ingredients-suitable-sterile-compounding

## About this information
General health information, not personal medical advice, diagnosis or treatment. A prescription is required and is never guaranteed.
Velri is a brand operated by Velri Management LLC, a Nevada limited liability company. Velri is a non-clinical technology and administrative services company. Velri does not provide medical advice, diagnosis, treatment, or pharmacy services, and does not direct the clinical judgment of any provider.
All medical consultations and prescriptions are provided directly by independent provider groups (Online Medical Care, P.C.; TMD of Kansas, P.A.; TMD of Texas, P.A.; and TMD of CA, PC), by a provider licensed in your state. Velri does not employ providers. A prescription is issued only if a provider determines it is clinically appropriate in their independent medical judgment.
All prescription products are dispensed by independent, licensed pharmacies. Velri does not own, operate, or control any pharmacy and does not dispense medication. You may opt out of using a given provider group or pharmacy at any time.
Compounded medications are not reviewed or approved by the FDA for safety, effectiveness, or quality. Compounded products are not equivalent to or interchangeable with any FDA-approved brand-name drug. Availability varies by state.
Velri is cash-pay. We do not bill Medicare, Medicaid, or commercial insurance. Refunds and order problems are addressed in the Terms of Use; your rights under applicable law are not limited. State availability and clinical eligibility apply.
Velri and telehealth are not for medical emergencies. If you are experiencing an emergency, call 911.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
Care is available to eligible adults 18 and older in 47 states and D.C., United States only.
Notice of Privacy Practices: https://velri.co/privacy/notice-of-privacy-practices
Terms: https://velri.co/legal/terms
Provider group or pharmacy opt-out help: https://velri.co/contact and https://velri.co/standards#trust-support