What Is Niacinamide Good For?
Niacinamide shows up on skincare bottles, multivitamin labels, and the back of pre-workout tubs. Same vitamin, three very different contexts, which is why the question keeps getting asked.
This article answers one thing: what niacinamide is actually good for, based on what the research has looked at. Side effects, sourcing, and timing are separate questions covered elsewhere.
Niacinamide is good primarily as a form of vitamin B3, which the body converts into nicotinamide adenine dinucleotide (NAD), a coenzyme involved in hundreds of reactions that release energy from food [1]. That makes its most established role nutritional: covering vitamin B3 needs so normal energy metabolism and cell signaling processes can proceed.
Beyond basic nutrition, the research clusters in two areas. Topical niacinamide has been reviewed in dermatology, where the review literature describes mechanisms involving barrier lipids, sebum, and pigment transfer in skin [2]. Oral nicotinamide has also been discussed in dermatology reviews as one of several supplement ingredients that have been studied for skin endpoints [3].
Niacinamide is not the same as niacin (nicotinic acid). Niacinamide does not produce the flushing reaction associated with nicotinic acid, and the two forms have been described as having different safety and effect profiles in the review literature [4].
In supplements, niacinamide or niacin usually appears at modest amounts to support normal B3 intake alongside food. Talk with a healthcare professional before starting any supplement, especially if you are pregnant, nursing, under 18, taking medication, or managing a health condition.
What does niacinamide actually do in the body?
Niacinamide is one of two main dietary forms of vitamin B3. Once absorbed, it feeds into the NAD pool, and NAD is the electron carrier that powers glycolysis, the citric acid cycle, and oxidative phosphorylation [1].
That matters for anyone who trains. Energy production in working muscle depends on recycling NAD between its oxidized and reduced forms thousands of times per minute. When B3 intake is adequate, that machinery runs normally. Vitamin B3 does not add extra energy on top of normal status; it supports a process that is already running.
NAD is also a signaling substrate
NAD is consumed, not just recycled, by enzymes involved in DNA repair and cell signaling. Interest in "NAD boosting" has driven research into precursors such as nicotinamide riboside and nicotinamide mononucleotide. A PRISMA-guided systematic review of 113 preclinical and clinical studies found that oral NR and NMN consistently raised NAD-related metabolites in blood and cells and were generally well tolerated over weeks to months, while effects on functional, metabolic, and vascular outcomes were heterogeneous and often null [5].
That is an honest summary of where the field sits. Target engagement is clear. Downstream benefit in healthy adults is not.
Adequate intake is the clearest case
The strongest evidence for any B vitamin involves people who are not getting enough. A systematic review of vegan diets in European populations reported that niacin intake was among the nutrients commonly below recommendations in those groups [6]. Modeling work on global dietary intake has also estimated widespread micronutrient inadequacies across populations [7].
What is niacinamide good for skin?
This is the most-searched version of the question, and most of the evidence behind it is topical rather than oral.
A dermatology review of niacinamide described proposed mechanisms in skin, including epidermal barrier lipid synthesis, sebum production, and pigment transfer, and summarized its topical use across cosmetic applications [2]. Reviews also characterize niacinamide as well tolerated on skin at the concentrations used in cosmetic formulations [8].
Oral versus topical
Taking a B3 capsule is not the same intervention as applying a serum. A review of dietary supplements in dermatology discussed nicotinamide alongside zinc, biotin, vitamin D, and Polypodium, and noted that the evidence base differs substantially by ingredient and by endpoint [3]. The amounts used in oral dermatology research are well above what a general-purpose multivitamin or pre-workout provides.
If acne specifically is what brought you here, that has its own write-up: our look at niacinamide and acne covers what the studies measured.
What it is not
Niacinamide is not a treatment for any skin disease, and nothing on a supplement label should suggest otherwise. Supplements are not FDA-approved. Dietary supplements are intended to supplement the diet, and consumer guidance recommends discussing them with your clinician [9].
How is niacinamide different from niacin?
People use the two words interchangeably. They are chemically related but behave differently.
Niacin (nicotinic acid) is the form associated with the flushing response: warmth, redness, and tingling in the face and upper body shortly after a larger dose. Niacinamide (nicotinamide) is the amide form and does not cause that reaction. A review comparing the two described meaningful differences in safety profile and in the effects attributed to each form [4].
The two forms also diverge in the research literature. Nicotinic acid has historically been studied in clinical settings for outcomes unrelated to general nutrition, while niacinamide has not shown that same profile [4]. For everyday dietary purposes, both forms count toward vitamin B3 intake.
Reading a supplement label
Most labels list "niacin" with the form in parentheses, such as niacinamide or nicotinic acid, plus the amount and the percent Daily Value. A European clinical nutrition guideline covers assessment, monitoring, and provision of micronutrients including B vitamins, and notes that terminology around deficiency, repletion, and supplementation is frequently used imprecisely [1].
For a practical checkpoint: if a label gives a very large B3 number and does not specify the form, you have no way to predict whether flushing is on the table.
How much niacinamide is good, and who should be careful?
For general nutrition, the goal is covering the Daily Value for vitamin B3, which food plus a modest supplement amount usually handles. Clinical nutrition guidance emphasizes assessing status rather than defaulting to high intakes, and addresses potential toxicity for each micronutrient [1].
A safety assessment of niacinamide and niacin reviewed toxicity data across both forms and concluded they were safe as used in cosmetic formulations at the concentrations reviewed [8]. Oral intakes are a separate question, and high-dose B3 has recognized upper limits set by nutrition authorities.
Who should check first
- Anyone pregnant or nursing. Dose decisions belong with a clinician.
- Anyone under 18.
- Anyone taking medication. Nutrient and drug interactions are well documented as a category, including interactions involving niacin [10].
- Anyone managing a health condition, where B3 intake should be discussed with a healthcare professional first.
Side effects of niacin, including the flush, are a separate topic with their own article. The short version: niacinamide generally does not flush, nicotinic acid often does, and large amounts of either are worth discussing with a clinician [4].
Where pre-workout fits
Niacin in a pre-workout is there to support normal energy metabolism, not to deliver a performance effect on its own [1]. Surge provides 15 mg of niacin per serving alongside its nitric oxide ingredients, with a label serving of 2 capsules 20 to 30 minutes before training. If you also drink energy drinks, remember that stacking caffeinated products raises your total intake; NIH consumer guidance covers that [11].
Where does niacinamide fit in a training stack?
Honestly: as a supporting nutrient, not a headline ingredient. No one takes vitamin B3 to add reps. It is on the label because energy metabolism depends on NAD, and because B vitamins are routinely included to help cover intake gaps [1].
The ingredients doing the performance work in a pump-focused formula are the nitric oxide precursors. A review of citrulline supplementation in humans reported that oral L-citrulline and citrulline malate raise plasma citrulline and arginine concentrations along with total nitrate and nitrite [12]. A meta-analysis of 118 randomized controlled trials on nitric oxide-related foods found trivial but statistically significant endurance performance benefits for nitrate-rich and polyphenol-rich foods, and no effect for foods rich in L-citrulline [13]. In a six-week trial in adults aged 60 to 73 following an adapted activity program, walking speed improved significantly in the citrulline-supplemented group compared with placebo, while strength and endurance showed no significant difference [14].
A sensible way to think about it
- Get B3 from food first; meat, fish, legumes, and fortified grains are common sources.
- Treat the niacin on a pre-workout label as part of your daily total, not a separate dose.
- If your overall B-vitamin intake is thin, a dedicated B-complex is a more direct tool than a pre-workout.
- Topical skin goals call for a topical product, not a capsule.
If B-vitamin intake is the actual goal, a B-complex with B12 is built for that job. UpSurge products are made in the USA in an FDA-registered, GMP-certified facility and third-party tested for purity and potency.
Frequently asked questions
What is niacinamide good for skin?
Most of the skin evidence is topical. A dermatology review described niacinamide's proposed mechanisms in skin, including barrier lipid synthesis, sebum, and pigment transfer, and summarized its cosmetic use [2]. A separate review discussed oral nicotinamide among supplement ingredients studied in dermatology and noted the evidence varies by endpoint [3]. A serum and a capsule are not interchangeable interventions.
How much niacinamide is good?
For general nutrition, enough to cover the vitamin B3 Daily Value through food plus any supplement you take. Clinical nutrition guidance favors assessing status over defaulting to high intakes and addresses potential toxicity for each micronutrient [1]. Research amounts used in dermatology studies run well above typical multivitamin levels, so any larger intake is a conversation to have with a healthcare professional first.
Is niacinamide the same as niacin?
No. Both are forms of vitamin B3, but niacinamide is the amide form and does not cause the flushing reaction linked to nicotinic acid. A review comparing the two described differences in their safety profiles and in the effects attributed to each form [4]. Nicotinic acid has historically been studied in clinical settings for purposes unrelated to general nutrition; niacinamide has not shown that same profile.
Does niacinamide raise NAD levels?
Niacinamide is an NAD precursor, and NAD is central to energy-releasing metabolic reactions [1]. A systematic review of 113 studies found that oral nicotinamide riboside and nicotinamide mononucleotide reliably raised NAD-related metabolites in blood and cells and were generally well tolerated, while effects on functional and metabolic outcomes were mixed or null [5]. Raising NAD markers and changing how you feel are different endpoints.
Key takeaways
- Niacinamide is a form of vitamin B3 and a precursor to NAD, the coenzyme behind energy-releasing metabolic reactions [1].
- Most skin research on niacinamide is topical; reviews describe mechanisms involving barrier lipids, sebum, and pigment transfer [2].
- Niacinamide does not cause the flushing associated with nicotinic acid, and the two forms differ in profile [4].
- NAD precursor trials reliably raise NAD-related metabolites but show mixed or null results on functional outcomes [5].
- Surge provides 15 mg of niacin per serving; the label serving is 2 capsules 20 to 30 minutes before training.
If you want the B3 on your label sitting alongside nitric oxide ingredients rather than on its own, take a look at Surge pre-workout capsules and read the full ingredient panel before you decide.
References
- ESPEN micronutrient guideline. Clinical nutrition (Edinburgh, Scotland) (2022). PubMed 35365361
- Niacinamide - mechanisms of action and its topical use in dermatology. Skin pharmacology and physiology (2014). PubMed 24993939
- Dietary supplements in dermatology: A review of the evidence for zinc, biotin, vitamin D, nicotinamide, and Polypodium. Journal of the American Academy of Dermatology (2021). PubMed 32360756
- Nicotinamide: An Update and Review of Safety & Differences from Niacin. Skin therapy letter (2020). PubMed 33196157
- NAD⁺ supplementation for anti-aging and wellness: A PRISMA-guided systematic review of preclinical and clinical evidence. Ageing research reviews (2026). PubMed 41655607
- Intake and adequacy of the vegan diet. A systematic review of the evidence. Clinical nutrition (Edinburgh, Scotland) (2021). PubMed 33341313
- Global estimation of dietary micronutrient inadequacies: a modelling analysis. The Lancet. Global health (2024). PubMed 39218000
- Final report of the safety assessment of niacinamide and niacin. International journal of toxicology (2005). PubMed 16596767
- MedlinePlus: Dietary Supplements. medlineplus.gov
- Drug-nutrient interaction. Clinical therapeutics (1982). PubMed 7046936
- NIH National Center for Complementary and Integrative Health: Energy Drinks. www.nccih.nih.gov
- Effects of Citrulline Supplementation on Exercise Performance in Humans: A Review of the Current Literature. Journal of strength and conditioning research (2020). PubMed 31977835
- Effect of food sources of nitrate, polyphenols, L-arginine and L-citrulline on endurance exercise performance: a systematic review and meta-analysis of randomised controlled trials. Journal of the International Society of Sports Nutrition (2021). PubMed 34965876
- L-Citrulline Supplementation and Exercise in the Management of Sarcopenia. Nutrients (2021). PubMed 34579009
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for informational and educational purposes only and is not medical advice. Dietary supplements are not a substitute for a balanced diet, training, or sleep. Talk with a qualified healthcare professional before starting any supplement, especially if you are pregnant, nursing, under 18, taking medication, or managing a health condition.