
- Predictive test
- None available
- Check first
- Thyroid, iron, B12, glucose, sleep, mood
- Approach
- Defined trial with agreed goals
- Regulatory status
- Compounded, not FDA-approved
Why there is no candidacy test
It would be convenient to measure your NAD+, see that it is low and treat it. In practice, NAD+ testing is not standardized, there is no agreed normal range for adults and no study has shown that a baseline level predicts who will feel better on treatment. HealifyMD clinicians do not use NAD+ levels to decide who qualifies.
Instead, the decision rests on your symptoms, your health history, what else has been tried and whether your expectations match what the evidence can support.
What to rule out first
Fatigue, brain fog and poor recovery are the most common reasons people ask about NAD+. They are also symptoms of many treatable problems. MedlinePlus lists anemia, thyroid disease, sleep disorders, depression, medications and chronic illnesses among the usual causes. Missing one of these and trying NAD+ instead can cost months.
A basic workup usually covers the following. If something turns up, treating it directly comes first.
- Thyroid function (TSH, and sometimes free T4)
- Iron stores (ferritin) and a complete blood count
- Vitamin B12 and vitamin D
- Fasting glucose, A1c or insulin
- Sleep quality, snoring and possible sleep apnea
- Mood, stress, alcohol use and medications
- Perimenopause, menopause or low testosterone, depending on your age and symptoms
Who might reasonably try it
People who tend to be good fits are adults who feel generally healthy, have normal or treated basic labs, are already working on sleep, exercise and alcohol, and are curious whether NAD+ adds anything. They are comfortable paying for a trial that may not help, and they are clear that it is not a treatment for a specific disease.
If you are looking for a fix for a diagnosed condition, such as depression, long COVID or addiction recovery, those uses are promoted online but have not been established in controlled trials. They deserve care aimed at the condition itself.
Who should hold off or talk it through first
None of these automatically rules you out of a conversation, but they shift the balance toward caution.
- Pregnancy or breastfeeding: there are no safety data, so NAD+ is not offered
- Active cancer or a recent cancer history: NAD+ supports metabolism in all cells, and the implications are unknown, so involve your oncology team
- Significant kidney or liver disease: these organs handle NAD+ breakdown products
- Multiple medications or complex conditions: your clinician will check for interactions and overlapping effects
- A history of strong reactions to injections or infusions
What a fair trial looks like
Before starting, agree on two or three specific things you hope will change, such as afternoon energy, workout recovery or focus at work, and how you will track them. Decide on a review point after a set number of weeks. If there is no meaningful change by then, stopping is a perfectly good result.
Keep everything else steady during the trial where you can. If you change your sleep routine, start a new medication and begin NAD+ in the same month, it becomes impossible to know what helped. A short weekly note on energy, sleep and how you recovered from exercise is usually enough.
Injections can cause redness at the site, and some people feel flushing, nausea or a brief tight sensation. These are usually managed by adjusting the dose or timing. Report anything severe or unusual right away.
Habits that work alongside, or instead
Whatever you decide about NAD+, the steps with the best evidence for energy in midlife are not glamorous. Regular strength training preserves muscle, consistent sleep repairs more than any supplement, lower alcohol intake improves sleep quality, and correcting a low iron, B12 or vitamin D level can make a noticeable difference within weeks.
Many people find these changes are enough. If they are not, a trial of NAD+ can still be considered, and you will be in a better position to judge whether it adds anything.
Regulatory status and cost
NAD+ for injection is prepared by licensed compounding pharmacies. It is not FDA-approved, FDA has not reviewed it for safety, effectiveness or quality, and it is not equivalent to any branded product. FDA lists NAD in Category 1 of nominated 503A bulk substances, meaning it remains under evaluation.
HealifyMD's NAD+ Injection starts from $199/month with no membership fee. The Comprehensive Lab Panel is $199 (one-time) if you need baseline labs, and your price is confirmed at the eligibility review.
Common questions
Can I get my NAD+ level tested before starting?
Tests exist, but there is no established normal range and results do not predict response. Standard labs that look for causes of fatigue are more useful.
Is NAD+ therapy safe for people over 60?
Age alone is not a barrier, but older adults are more likely to have kidney issues or take several medications. Your clinician will review these before you start.
What if I have already tried everything else?
If common causes have been checked and lifestyle steps are in place, a defined trial is reasonable. Go in with realistic expectations, since the evidence is still early.
Can I use NAD+ if I have had cancer?
Discuss it with your oncology team first. NAD+ fuels metabolism in all cells, and its effects in people with cancer are not understood.
How will I know if it is working?
Track the specific goals you set before starting and review them at the agreed check-in. A noticeable, consistent change is the signal to look for.
Is NAD+ a treatment for long COVID or depression?
These uses have not been established in controlled trials. If you have one of these conditions, care aimed directly at it is the better first step.
Do I need labs before starting?
Your clinician may ask for recent labs to rule out other causes of your symptoms. If you need them, HealifyMD offers a Comprehensive Lab Panel.
Sources
We cite government agencies, professional societies and peer-reviewed research. See our editorial policy.
- FatigueMedlinePlus (National Library of Medicine)
- Dietary Supplementation With NAD+-Boosting Compounds in Humans: Current Knowledge and Future Directions (2023)The Journals of Gerontology: Series A (via University of Delaware)
- Compounding and the FDA: Questions and AnswersU.S. Food and Drug Administration
- Bulk Drug Substances Nominated for Use in Compounding Under Section 503A (category lists)U.S. Food and Drug Administration
- What Is Sleep Apnea?National Heart, Lung, and Blood Institute