THE SCIENCE

Liposomal NAD+

Liposomal delivery wraps a fragile molecule like NAD+ inside a microscopic phospholipid bubble that mirrors your own cell membranes, with the aim of protecting it from stomach acid so that more of it can survive digestion and be absorbed.

Last Updated: 18 September 2026

Standard oral supplements for sensitive molecules often deliver only a fraction of their active ingredient to your systemic circulation. A lot is lost in the acidic, enzyme-rich environment of the stomach or gut. The science around the liposomal barrier is promising: cell-mimicking fat vesicles called liposomes.

This is a look at the biophysics of why liposomal delivery helps, how the absorption journey is designed to work, and where the evidence is genuinely strong versus still developing.

Key Takeaways

How does liposomal delivery work?

It encapsulates the active ingredient inside a phospholipid bilayer, a tiny fatty sphere. The fat shell is designed to help protect the molecule during gastrointestinal transit and potentially support its absorption.

Why does NAD+ need it?

NAD+ is a large, fragile coenzyme. As an unprotected powder, much of it is degraded by stomach acid and first-pass metabolism, so little of the labelled dose is absorbed intact.

Is the benefit proven?

The liposomal delivery principle is well demonstrated for nutrients like vitamin C, and the mechanism is sound. Human data specific to liposomal NAD+ is still early, so it is best judged on protection and quality, not bold multiplier claims.

Why does unprotected NAD+ have low bioavailability?

Unprotected NAD+ has low bioavailability because it is broken down before it can be absorbed. NAD+ is a large, water-soluble coenzyme, and the digestive system is designed to dismantle this kind of molecule.

Gastric acid and enzyme breakdown

When a standard NAD+ powder reaches the stomach, it meets gastric acid (hydrochloric acid) and digestive enzymes such as pepsin. This harsh, acidic environment may affect the stability of the coenzyme long before it reaches the small intestine, which is where nutrient absorption mainly happens.

The first-pass problem

Whatever does get absorbed then faces a second hurdle. First-pass metabolism means that compounds absorbed from the gut travel to the liver first, where a large share is cleared before reaching the rest of the body. Clinical references on medication routes of administration describe how this first-pass effect reduces how much of an oral dose reaches the bloodstream compared with routes that bypass digestion.4

Stomach acid degrades unprotected NAD+.
Liposomes encapsulate NAD+ in a lipid sphere.
An enteric coating prevents breakdown in the stomach.

Anatomy of a liposome: nature's delivery system

A liposome is a tiny sphere built from the same kind of fat that makes up your cell membranes. Understanding its structure is the key to understanding why it protects its cargo.

The phospholipid bilayer

Liposomes are made from phospholipids, which are amphipathic: each molecule has two ends that behave differently in water.

The hydrophilic (water-attracting) head faces outwards towards watery surroundings, and also lines the watery core inside.
The lipophilic (fat-attracting) tail tucks into the middle, forming a fatty inner layer that resists watery, acidic contents.

Two of these layers arranged tail-to-tail create the phospholipid bilayer: a stable, protective shell with a water-friendly cargo space inside, ideal for carrying a water-soluble molecule like NAD+.

Why the phospholipid source matters

Quality liposomes need a clean phospholipid source rich in phosphatidylcholine. Vivere uses non-GMO sunflower lecithin rather than soy lecithin, which many people prefer because it is naturally soy-free and non-GMO, sidestepping a common allergen while providing the phospholipids the liposome is built from.

Mimicking your cell membranes

Here is the clever part. Because liposomes contain phospholipids similar to those found in biological membranes, they can interact with biological membranes in ways that may support delivery. That structural similarity is what allows the carrier to protect its cargo through digestion and support its uptake at the other end.

How is liposomal NAD+ absorbed? The journey, step by step

Here is how the absorption journey is designed to work. The fine detail of oral liposome uptake is still an active area of research, so think of this as the intended route rather than a fixed play-by-play.

Ingestion and gastric survival. You swallow the capsule. In a dual-protected product, the enteric coating adds a first barrier so the capsule stays sealed in the acidic stomach.
Release in the intestine. The capsule opens in the near-neutral pH of the small intestine, releasing the liposomes, where absorption happens rather than in the stomach.
Uptake into the body. The lipid vesicles help their cargo cross the intestinal wall.
Delivery to cells. Liposomes are thought to be taken up by cells through recognised processes such as membrane fusion and endocytosis, helping more intact beta-NAD+ reach the cells that use it.

How strong is the evidence for all this? The clearest proof of the principle comes from other water-soluble nutrients. A 2025 scoping review on whether liposomal vitamin C improves bioavailability found the approach promising, while noting that high-quality human evidence is still limited.6 For NAD+ specifically, oral supplements have been shown to raise circulating levels, though a 2025 review in Nature Metabolism on NAD+ precursor supplementation in human ageing notes that functional benefits in people remain limited.3 The liposomal delivery technology is supported by research, while the direct human data is still catching up.

Liposomal direct NAD+ vs other forms

This table compares the delivery approaches by design. The last column reflects how well each form is built to protect and deliver intact NAD+, not a measured clinical figure, since direct human comparisons are still limited.

Descriptors reflect formulation design and the protection principle, not head-to-head clinical bioavailability data.

Both precursor routes rely on your body converting the ingredient into NAD+, and NMN in particular sits in an unsettled position: it is treated as a novel food in Great Britain and is not yet authorised.5 Vivere delivers direct beta-NAD+ instead, so there is no conversion step to rely on. For a fuller breakdown, see NAD+, NMN and NR compared.

How this supports energy at the cellular level

Getting intact NAD+ to your cells matters because of what it does once it arrives. NAD+ is a coenzyme central to cellular respiration, the process your mitochondria use to turn food into ATP, the energy that powers your cells.

On the benefit side, it is important to stay precise. Because NAD+ is a vitamin B3 (niacin) derivative, the authorised UK health claim for this nutrient group is that niacin contributes to normal energy-yielding metabolism and the reduction of tiredness and fatigue.2 The NHS notes that niacin helps the body release energy from food.1 Better delivery is about giving that nutrient the best chance of being absorbed, not about promising more than the evidence supports.

"The idea behind liposomal technology is to encapsulate an active ingredient within a lipid-based delivery system, with the aim of protecting it from degradation and potentially improving its absorption and bioavailability. While research specifically on liposomal NAD+ is still at an early stage, lipid-based delivery systems have been extensively studied for their potential to protect active ingredients and support their absorption through the gastrointestinal tract. That is why it is important to understand what happens when you swallow a capsule."
Yusra Serdaroglu Aydin, MSc RD, Head of Nutrition at Vivere

Frequently asked questions

What is the difference between liposomal NAD+ and regular NAD+?

Regular NAD+ powder is unprotected, and much of it is broken down by stomach acid during digestion. Liposomal NAD+ encapsulates the coenzyme inside microscopic lipid spheres that shield it from gastric acid, so more of it can reach the bloodstream intact. You can see the two compared directly in our guide to liposomal versus standard oral NAD+.

Are all liposomal NAD+ supplements the same?

No. Liposomal quality depends on the lipid purity, the particle structure and the capsule design. Vivere uses non-GMO sunflower lecithin for clean phospholipids and houses the liposomes inside an enteric-coated capsule so they pass through stomach acid before releasing. Our guide on how to choose a liposomal NAD+ supplement lists what to check.

Does liposomal technology remove the need for NAD+ injections?

Not entirely, they suit different goals. Subcutaneous injections bypass the gut for the most direct route, while a high-quality enteric-coated liposomal capsule is a convenient, needle-free option for daily use. Our guide on how NAD+ capsules and injections compare weighs them up.

Is liposomal NAD+ absorption clinically proven?

The liposomal principle is well demonstrated for nutrients such as vitamin C, and the mechanism for NAD+ is sound, but robust human trials specific to liposomal NAD+ are still limited. That is why we describe the delivery as designed to improve absorption rather than making bold numerical claims.

Nutritionist's Corner: Final Thoughts

"Delivery is the part of the supplement conversation people skip, and it is often the part that matters most. With NAD+, the science is clear enough on the fundamentals: it is a fragile molecule, the gut is hostile to it, and using a phospholipid-based formulation is designed to provide additional protection during gastrointestinal transit."
Yusra Serdaroglu Aydin, MSc RD, Head of Nutrition at Vivere

About the author. This guide was reviewed by Yusra Serdaroglu Aydin, MSc RD, Head of Nutrition at Vivere. It draws on NHS guidance, published pharmacology and pharmaceutics references, and current research into how NAD+ supports the body. If you are choosing a product, start with our guide to the liposomal NAD+ capsules developed by Vivere.

This article is for general information and education only and is not medical advice. Food supplements are not a substitute for a varied, balanced diet and a healthy lifestyle. If you are pregnant, breastfeeding, taking medication or managing a health condition, speak to your GP or pharmacist before starting any new supplement.

Sources and references

Key studies, trials and reviews

Do Liposomal Vitamin C Formulations Have Improved Bioavailability? A Scoping Review. Basic & Clinical Pharmacology & Toxicology, 2025. Finds the liposomal approach promising for absorption while noting that high-quality human evidence is still limited.
NAD+ precursor supplementation in human ageing: clinical evidence and challenges. Nature Metabolism, 2025. Notes that oral supplements can raise circulating NAD+ while functional benefits in humans remain limited.
Medication Routes of Administration. StatPearls, NCBI Bookshelf. Explains first-pass metabolism and how the route of delivery affects how much of a dose reaches the bloodstream.

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