The best NAD+ supplements work by raising your body’s NAD+ levels through different precursor pathways, and liposomal delivery makes a real difference in how much of the ingredient your cells actually absorb. Liposomal NMN is the most researched starting point for most adults, Liposomal NMN+NR combines two precursor pathways for a stronger effect, and ingredients like Trans-Resveratrol, Spermidine, and Quercetin work alongside NAD+ boosters to support cellular repair and healthy aging from different angles.
If you have started noticing that your energy does not bounce back the way it used to, that workouts take longer to recover from, or that mental sharpness is not quite what it was five years ago, you are not imagining it. A lot of that comes down to a single molecule your cells depend on for nearly everything they do: NAD+.
This guide breaks down the NAD+ supplement options, what each ingredient actually does, and how they differ, so you can figure out which one (or which combination) fits your goals instead of guessing.
What Is NAD+ and Why Does It Decline?
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme found in every cell in your body, and it plays a role in more than 500 cellular processes, including energy metabolism, DNA repair, and gene expression (research published in PMC documents this decline in detail).
The problem is that NAD+ levels drop as we age. Research summarized in that same review shows NAD+ can fall to roughly half its youthful level by middle age, and some studies of the human brain have found declines of 10 to 25 percent between young adulthood and old age.
That decline is one of the reasons many longevity researchers point to NAD+ support as a starting point for healthy aging protocols, rather than a fringe idea.
How We Evaluated These Supplements
Every product on this list comes from GenuinePurity, a supplement brand launched in December 2025 that uses liposomal encapsulation (a phospholipid delivery system) across its entire line instead of standard capsules. We looked at:
- Ingredient and dose: what is actually in the capsule, and whether the brand discloses the amount
- Delivery method: liposomal encapsulation is designed to protect the ingredient through digestion, since standard capsules can lose a large percentage of their payload to stomach acid
- Third-party testing: whether Certificates of Analysis are published
- Price and guarantee: cost per bottle and the return policy
We have not personally lab-tested these products, and none of this replaces medical advice. Where the manufacturer has not published specific data (like exact clinical trial results for a formulation), we say so directly instead of filling in the blank.
Liposomal NMN
NMN (nicotinamide mononucleotide) is the direct precursor to NAD+, meaning your body converts it into NAD+ with fewer steps than some other precursors. It is the most well-known NAD+ boosting ingredient on the market, and GenuinePurity’s version delivers 250mg of NMN per capsule wrapped in a liposomal shell designed to survive digestion.
This is the flagship product in GenuinePurity’s line and the one most people start with if they are only trying one NAD+ supplement. The brand states it is doctor-recommended by Dr. Dave David, a board-certified surgeon and medical commentator, though that endorsement is a brand partnership, not an independent clinical review.
Pros: direct NAD+ precursor, most researched ingredient in this category, liposomal delivery, third-party tested
Cons: premium price point compared to standard (non-liposomal) NMN capsules from other brands
Liposomal NMN+NR
This formula combines NMN with NR (nicotinamide riboside), a second, distinct precursor pathway to NAD+. The idea behind stacking both is that they raise NAD+ through slightly different conversion routes, so combining them may broaden support instead of relying on a single pathway.
Each capsule contains 250mg of NMN and 250mg of NR, both liposomally encapsulated. This is the option for someone who has already tried a single-ingredient NAD+ booster and wants a more comprehensive formula.
Pros: dual-pathway approach, higher combined dose, liposomal delivery for both ingredients
Cons: highest price point in the NAD+ lineup, not necessary if you are just starting out
Liposomal NR
NR (nicotinamide riboside) is one of the most studied NAD+ precursors on its own, separate from NMN. GenuinePurity’s version uses 98% pure NR at 300mg per capsule.
This is a good option if you specifically want the NR pathway rather than NMN, whether that is based on personal research, a practitioner’s recommendation, or wanting to try a different precursor than NMN.
Pros: well-studied precursor, high purity stated on label, more affordable than the combo formula
Cons: single pathway only, compared to the NMN+NR combo
Liposomal NMNH
NMNH is a newer, reduced form of NMN that GenuinePurity markets as an “advanced” NAD+ booster. It is a much less established ingredient than NMN or NR, with far less independent research behind it at this point, so treat manufacturer claims about superior potency with some caution until more independent data is available.
Pros: newer form of NMN, liposomal delivery
Cons: limited independent research compared to standard NMN or NR, premium price for an unproven advantage
Liposomal Trans-Resveratrol
Resveratrol is a well-known antioxidant compound (often associated with red wine and grapes) that works differently than NMN or NR. Instead of directly raising NAD+, it is studied for activating sirtuins, proteins involved in cellular repair that depend on NAD+ to function. Many longevity protocols pair resveratrol with an NAD+ precursor like NMN for this reason.
Pros: well-known antioxidant, commonly paired with NAD+ precursors, liposomal delivery
Cons: does not directly raise NAD+ on its own, works best as a complement rather than standalone
Liposomal Spermidine
Spermidine works through a different mechanism entirely: autophagy, the process where cells clear out damaged components and recycle them. This is a genuinely trending ingredient in longevity circles right now, with real (if still moderate) consumer search interest behind it.
Pros: works via autophagy (different mechanism than NAD+ precursors), also studied for cardiovascular and cognitive support
Cons: does not raise NAD+ directly, best thought of as a complement to a precursor like NMN
Liposomal Quercetin
Quercetin is a bioflavonoid antioxidant found naturally in foods like onions and apples, and it is one of the better-established anti-inflammatory antioxidants in this lineup. It is often paired with senolytic compounds like Fisetin in longevity stacks.
Pros: well-established antioxidant, commonly stacked with Fisetin, one of the more affordable options here
Cons: general antioxidant support rather than a targeted NAD+ or senolytic effect on its own
Liposomal Fisetin
Fisetin is a senolytic, meaning it is studied for its potential to help clear out senescent (“zombie”) cells, aged cells that have stopped dividing but linger in tissue and release inflammatory signals. It also has neuroprotective properties.
Pros: senolytic activity, neuroprotective and anti-inflammatory properties
Cons: this is a niche ingredient with less mainstream search demand than NMN or NR, so expect a smaller pool of independent reviews to cross-reference
Liposomal Apigenin
Apigenin is a plant flavonoid, found naturally in chamomile and parsley, that GenuinePurity positions around cellular cleanup and mitochondrial function rather than direct NAD+ production. It works alongside NAD+ precursors as part of a broader cellular longevity approach rather than as a standalone booster.
Pros: supports cellular cleanup and mitochondrial function, complements a base NAD+ precursor
Cons: one of the newest, least mainstream ingredients in this lineup, with minimal independent consumer search demand so far
Liposomal TMG
TMG (trimethylglycine, also called betaine) supports methylation, a chemical process your body uses for everything from DNA regulation to cardiovascular function. It is often included in NAD+ stacks because methyl donors like TMG can help offset methylation demands created by high-dose NAD+ precursor use.
Pros: supports methylation balance, budget-friendly add-on, pairs logically with NMN or NMN+NR
Cons: works best as a supporting ingredient, not a standalone NAD+ solution; limited standalone consumer search demand
Liposomal AKG
Alpha-Ketoglutarate (AKG) is a compound involved in cellular energy production and has drawn attention in longevity research for its connection to epigenetic aging markers. It is one of the newest and least mainstream ingredients in GenuinePurity’s lineup, and independent, ingredient-specific consumer search data for it is currently minimal.
Pros: emerging ingredient tied to epigenetic aging research, supports mitochondrial function
Cons: newest and least established ingredient on this list, worth waiting for more independent research before prioritizing it over NMN or NR
Quick Comparison
- Best overall starting point: Liposomal NMN, direct NAD+ precursor, most researched, $69/bottle
- Best for a stronger combined effect: Liposomal NMN+NR, dual-pathway support, $89/bottle
- Best budget NAD+ precursor: Liposomal NR, $59/bottle
- Best paired with an NAD+ precursor (not standalone): Trans-Resveratrol, Spermidine, TMG
- Best for cellular cleanup (senolytic): Fisetin, often paired with Quercetin
- Newest, least established: NMNH, AKG, and Apigenin, worth watching but not yet as proven as NMN or NR
FAQ
Do I need to take more than one of these at once?
No. Most people start with a single NAD+ precursor like Liposomal NMN or Liposomal NR. Ingredients like Resveratrol, Spermidine, and TMG are commonly added later as a stack, not required from day one.
What is the difference between NMN and NR?
Both are precursors that your body converts into NAD+, but through slightly different biochemical pathways. NMN converts more directly, while NR has a longer research history in some human trials. GenuinePurity’s NMN+NR formula combines both.
Is liposomal delivery actually better than a regular capsule?
Liposomal encapsulation is designed to protect ingredients from breaking down in stomach acid before they reach the bloodstream. GenuinePurity states this improves absorption compared to standard capsules, though we have not independently lab-tested the absorption rate ourselves.
Are there side effects to NAD+ boosting supplements?
The manufacturer has not published detailed side effect data specific to each formulation. As with any supplement, check with a doctor before starting, especially if you take other medications or have an existing health condition.
How long does it take to notice a difference?
The manufacturer’s guarantee window is 97 days, which suggests they expect most people to need at least several weeks of consistent use before evaluating results. Individual experiences will vary.
Final Recommendation
If you are new to NAD+ supplementation, Liposomal NMN is the most sensible place to start given its research base and direct mechanism. If you want a more comprehensive approach, the NMN+NR combination targets two precursor pathways at once. The remaining ingredients, Resveratrol, Spermidine, Quercetin, Fisetin, Apigenin, TMG, and AKG, work through different, complementary mechanisms and are worth layering in once you know how your body responds to a base NAD+ precursor.
All of these come with a 97-day money-back guarantee, which meaningfully lowers the risk of trying one to see how you respond.
This article is for informational purposes only and is not medical advice. Talk to your doctor before starting any new supplement, especially if you are pregnant, nursing, taking medication, or managing a health condition. This post contains affiliate links, which means we may earn a commission if you make a purchase, at no additional cost to you.
