Search for NAD ‘before and after’ and you land in a gallery of transformations. Faces that look younger, people describing brain fog lifting in forty eight hours, clinics promising you will go from drained to vibrant. Almost all of it is selling intravenous sessions that run from two hundred and fifty to well over a thousand dollars a visit.
Here’s what nobody in that gallery mentions: there is no meaningful NAD ‘before and after’ photo because NAD works inside your cells, where its effects are not something a camera can capture. What you may notice instead are changes in how you feel and function from day to day – and those are difficult to judge unless you paid attention to your baseline before you started. Almost nobody does.
Of all the questions I get about the NAD range, this one comes up most often. More than 10 billion Goli gummies have been sold worldwide since 2018, and this question keeps finding its way back. The answer is more useful than any ‘before-and-after’ photo because it gives you a way to judge the product for yourself rather than asking you to trust a promise.
The Short Answer
There is no visible ‘before and after’ for NAD. It works on cellular energy production, which produces no outward change a photograph could capture. What people report is subtle and felt: steadier baseline energy, less afternoon slump, easier recovery. Those changes are real but only detectable if you recorded your starting point. Without a baseline, you are guessing.
Why the Photographs Exist Anyway
If the effect is invisible, the obvious question is where all those transformation images come from.
They come from clinics selling infusions, and the incentive is straightforward. A single session costs more than a year of an oral supplement, so the marketing has to justify the gap, and dramatic imagery does that work. The claims attached to those images run well past what the research supports, into visibly firmer skin and reversed cellular aging.
The Federal Trade Commission is blunt about this category of evidence. Advertisers must hold appropriate scientific evidence for the underlying claim that a product will work for buyers as it did for the person giving the testimonial. A satisfied customer describing a transformation is not substantiation, no matter how sincere they are.
There is a second reason those accounts run hot, and dishonesty is not it. Expectation genuinely changes what people notice. Harvard Health describes the placebo response as real rather than imagined, capable of shifting how the body perceives symptoms, and strongest around exactly the things NAD is marketed for: fatigue, mood, energy. Someone who has just paid a lot of money and expects to feel better frequently does feel better, at least for a while. That is a genuine experience, and it is not evidence about the compound.
Two Kinds of ‘Before and After’
This is the fork that decides everything, and which branch you are on determines whether you will ever get an answer.
The first kind is the one you came looking for. Visible, photographable, obvious to other people. That kind exists for weight loss, for skin treatments, for dental work. It does not exist for NAD, and no amount of consistency will produce it, because raising a coenzyme inside your mitochondria does not change your face. If a visible transformation is what you want, this is the wrong category of product entirely and the honest thing is to say so now.
The second kind is measurable rather than visible. It shows up as a number in a blood test and as a pattern in your own week. Blood NAD levels genuinely rise on oral NR, and they rise in a dose-dependent way. In an eight week randomized controlled trial, whole blood NAD rose by twenty two, fifty one and one hundred and forty two percent at one hundred, three hundred and one thousand milligrams respectively, with the increase appearing within two weeks and holding for the rest of the study. That trial was funded by the ingredient’s manufacturer, which is worth knowing, and the measurement itself is straightforward laboratory chemistry rather than a judgement call.
The second kind is available to you. It just requires doing something before you start rather than after.
How to Record a ‘Before’ You Can Actually Use
Most people begin taking something and start watching for a difference, which is precisely backwards. Instead, take three simple steps during the week before your first dose to establish a baseline you can actually compare against later.
Step One: Score Four Specific Things, Not How You Feel Generally
Rate each of these from 1 to 10, every day for seven days: energy on waking, energy at three in the afternoon, mental clarity during your hardest task, and how recovered you feel the morning after exertion. General wellbeing is too vague to move detectably. These four are specific enough to shift and specific enough to remember.
Step Two: Write Down the Things That Contaminate the Comparison
Track the things that can easily drown out a subtle supplement effect: sleep duration, caffeine, alcohol, training load, work stress, and illness. If your sleep improves during the same month you start a new supplement, for example, it is easy to credit the supplement when the change may actually have come from sleeping better.
Step Three: Set the Review Date Before You Begin
Pick a date eight to twelve weeks out and write it down. Deciding in advance stops you evaluating on a good Tuesday or abandoning it on a bad Thursday, which is how most self-experiments die.
The Belief That Ruins Every Comparison
Underneath almost every disappointed review sits one conviction, and it is worth taking apart on its own because everything else follows from it.
The belief is that if you cannot feel it working, it is not working. It sounds like plain common sense. It is also the reason people abandon this category at week three, and it rests on a mistaken assumption about how the compound behaves.
NAD is a coenzyme involved in turning food into usable cellular energy. Raising its availability does not produce a sensation, in the way that swallowing extra iron produces no sensation even while it is correcting anemia. The absence of a felt event is not evidence of an absent effect, and the blood measurements from controlled trials make that concrete: NAD levels climbed measurably in people who reported feeling nothing dramatic at all.
The mirror image of this belief causes the opposite error. People who do feel something immediately conclude it is working, when a strong day-one response is far more likely to be expectation than biochemistry, since the underlying process takes weeks. Both errors come from treating sensation as the measurement. Sensation is the least reliable instrument you own for this particular job, which is exactly why the written baseline matters more than how convincing your memory feels.
What Controlled Trials Actually Found
Setting aside the clinic photographs, the human research on NR is more modest and more solid than the marketing on either side suggests.
Chronic supplementation with NR is well tolerated and effectively stimulates NAD metabolism in healthy middle-aged and older adults, according to a randomized, double-blind, placebo-controlled crossover trial. That study also raised the possibility of benefits for blood pressure and arterial stiffness, which later work has continued to examine, including a pilot trial combining NR with walking exercise in adults over fifty five with raised blood pressure.
A 2025 trial in people recovering from long COVID, which counted the ingredient’s maker among its funders, is the most instructive of the set precisely because of what it did not find: NR raised NAD levels within five weeks, but cognition, fatigue, sleep and mood did not improve significantly against placebo. The blood chemistry moved and the symptoms did not, which is the clearest illustration available that raising the molecule is a measurable event rather than a felt one.
Notice what is consistent across all of it. The measured outcome is blood chemistry and specific clinical markers, tested over weeks. Nothing in the literature resembles a photograph, and nothing resembles a forty eight hour transformation.
It is also worth stating plainly that supplements are not reviewed for effectiveness before sale, as the Food and Drug Administration explains, so a claim on a label is a claim rather than a finding. What research does confirm is the part that matters: oral NR reliably raises the molecule it is supposed to raise, in humans, in controlled conditions.
Who Notices the Most, and Who Notices Nothing
Change is easiest to detect when there was room for it, which sorts people fairly predictably.
The people who report the clearest differences tend to be over forty, running on interrupted sleep or high stress, and starting from a low baseline. If your three in the afternoon score was a four, a move to a six is obvious. The people who notice least are already sleeping well, training regularly and eating properly, because there is less headroom and the change lands inside normal daily variation. Nobody should expect a visible transformation, and anyone selling one is describing something the science does not support.
Pregnancy, breastfeeding, prescription medication or an ongoing health condition all warrant a word with your doctor first. Persistent fatigue in particular deserves a proper look, since it has many causes and a supplement is not a diagnosis. Our guide to how long Goli NAD takes to work covers the week by week picture in more detail.
NAD ‘Before and After’: Your Questions Answered
Are NAD ‘before and after’ photos real?
The photographs circulating online overwhelmingly promote intravenous infusions rather than oral supplements, and they cannot demonstrate what they appear to demonstrate. NAD works on cellular energy production, which generates no outward visible change. Differences in lighting, angle, hydration, sleep and time between shots account for far more of what you are seeing than any supplement could. Treat them as marketing rather than evidence.
What changes should I actually expect?
Realistically, subtle ones. People most often describe a steadier baseline energy rather than a lift, less of an afternoon slump, and easier recovery after physical effort. These build over weeks rather than arriving, and they are modest enough that you will miss them without a written starting point. Anyone expecting a dramatic day-to-day difference is measuring against a promise the research does not make.
How long before I can judge whether it is working?
Give it eight to twelve weeks of uninterrupted daily use. Blood NAD levels rise within about two weeks in controlled trials, but the downstream effects people care about take longer to become detectable against normal daily variation. Judging at three weeks is the single most common reason people conclude it did nothing, and it is too early to tell either way.
Why do some people feel a difference immediately?
Usually expectation rather than biochemistry. The placebo response is genuine and is strongest for exactly the outcomes this category targets, namely energy, mood and mental clarity. Since the underlying process takes weeks, a dramatic first-day response is far more likely to reflect what you anticipated than what the compound did. That does not make the experience false, but it does make it unreliable as evidence.
Is a blood test worth doing?
It is the only way to get an objective ‘before and after’, and some people do exactly that. A baseline NAD measurement before starting and another after twelve weeks gives you a real number rather than an impression. It is not necessary, and it costs money, but if you want proof rather than a feeling, that is where proof lives.
Is NAD safe to take every day?
For healthy adults, the human safety record is one of the better-established parts of this picture. Controlled trials running eight weeks and longer have reported no significant difference in adverse events between people taking NR and people taking placebo, across a range of doses. Mild digestive upset or nausea turns up occasionally and usually settles. That record does not extend to pregnancy, breastfeeding, or people on medication or managing a health condition, and those situations warrant a doctor’s input first.
For everyone else, taking it with food and staying at the label serving handles almost all of the early niggles people report. What the safety data really buys you is permission to be consistent, which is the only condition under which any of this becomes measurable.
How many NAD gummies should you take a day?
Follow the serving stated on the label rather than scaling up on the assumption that more is better. Trials have used daily NR doses from one hundred milligrams to a gram, and while blood NAD rises with dose, the outcomes people actually care about have not been shown to scale in the same way. Doubling a serving adds cost and sugar without a demonstrated payoff, and consistency across weeks matters far more than the size of any single dose.
Is NR better than NMN for raising NAD?
Both are precursors and both raise blood NAD, but they differ in how much human evidence sits behind them. NR has more than a decade of published human clinical trials, several of them placebo-controlled and running eight weeks or longer. NMN is newer to human research and carries a shorter record, which is not the same as being worse but does mean less is settled. If you want the option with the deeper human evidence base, that is currently NR, which is the precursor Goli chose for its NAD gummy rather than the newer and more heavily marketed alternative.
Do NAD gummies produce the same results as IV therapy?
They work through a different route and a different timescale. Infusions deliver a large amount at once, which is why clinics can describe rapid effects, though those effects tend to be short lived. Oral NR raises blood NAD steadily and measurably over weeks, at a fraction of the cost and without needles or appointments.
The research base for oral NR in humans is substantial and spans more than a decade, and Goli’s liquid-core gummy is built on NR for exactly that reason: the shell keeps it stable until you chew it, and it is a habit you can keep without booking anything.
Tracking It Properly Beats Hoping You Notice
If the honest position is that the change is measurable rather than visible, then the product that suits you is the one you will take daily for long enough to measure anything at all.
Something worth addressing before that – the objection that this is all too new to trust. The clinical record here belongs to NR rather than to any brand name. Nicotinamide riboside has more than a decade of published human trials behind it, several of them cited above, and a new product built on that ingredient inherits an established evidence base rather than starting from zero. The ingredient is not new; the packaging is.
Goli Renew NAD+ Gummies deliver NR alongside Vitamin B3 and Vitamin C in a liquid-core gummy, with the shell protecting the NR from air, moisture and heat until you chew it. NR rather than NMN is the deliberate choice, since it carries the longer human research record.
One viewer asked during a Live, “how will I know if it’s doing anything?” and my honest answer was that she would not, unless she wrote down her afternoons first. That is the whole article in a sentence. I take mine at midday, and the difference I noticed was not a lift but the absence of the three o’clock wall. See what readers pay here.
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Format claims are their own minefield. Three of the four promises printed on a liquid probiotic bottle do not survive contact with how bacteria actually behave, and liquid probiotics takes them apart one at a time. Same instinct, applied to a different shelf.
The Bottom Line
So, NAD ‘before and after’ is a real question with an unsatisfying answer and a useful method attached. There is no photograph to look forward to. There is a measurable rise in blood NAD, and there are subtle shifts in energy and recovery that you can detect if, and only if, you recorded where you started.
Today, before you buy anything, spend a week scoring four things out of ten: waking energy, three o’clock energy, clarity under load, and recovery after effort. That week costs nothing and is worth more than every transformation photo you will find. Then give it eight to twelve weeks without gaps and compare the numbers rather than your memory.
Goli’s count has run past ten billion gummies since 2018, and the buyers who stay with it are the ones who stopped waiting to be amazed and started paying attention instead. Write down your ‘before’, and the ‘after’ will be something you can actually read.
References
- Conze D, Brenner C, Kruger CL. Safety and Metabolism of Long-term Administration of NIAGEN (Nicotinamide Riboside Chloride) in a Randomized, Double-Blind, Placebo-controlled Clinical Trial of Healthy Overweight Adults. Scientific Reports (2019);9:9772. Funded by the ingredient manufacturer.
- 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);9:1286.
- Nicotinamide Riboside Combined with Exercise to Treat Hypertension in Middle-Aged and Older Adults: A Pilot Randomized Clinical Trial. GeroScience (2025).
- Health Products Compliance Guidance. Federal Trade Commission.
- The Real Power of Placebos. Harvard Health Publishing, Harvard Medical School.
- FDA 101: Dietary Supplements. U.S. Food and Drug Administration.
