Калкулатор за NAD+

What Is NAD+?

NAD+ (nicotinamide adenine dinucleotide) is an essential coenzyme present in every nucleated cell of the body. Strictly speaking, NAD+ is not a peptide but a dinucleotide, built from two linked nucleotides: one carrying nicotinamide (derived from vitamin B3) and one carrying adenine. It is handled in the same research context as injectable peptides because it ships as a lyophilized powder, is reconstituted with bacteriostatic water, and is administered subcutaneously for research purposes. Within this calculator, NAD+ is therefore presented as a research compound that follows the same dosing and reconstitution rules as a peptide.

The central biological role of NAD+ is that of an electron carrier. In metabolism, the molecule shuttles back and forth between its oxidized form (NAD+) and its reduced form (NADH), transporting reducing equivalents between the reactions that break down nutrients and those that build ATP, the universal energy currency of the cell. Without sufficient NAD+, glycolysis, the citric acid cycle, and oxidative phosphorylation cannot run efficiently. Beyond its role as a cofactor, NAD+ is also a consumed substrate: enzymes such as the sirtuins, PARPs, and CD38 cleave NAD+ and use its building blocks, which means the intracellular pool must be continuously replenished.

The interest of longevity research in NAD+ rests on the repeatedly reported observation that NAD+ levels decline in many tissues with advancing age. This decline has been linked to diminished mitochondrial performance, reduced sirtuin activity, and a constrained capacity for DNA repair. Strategies to restore the NAD+ pool, whether through precursors such as NMN and NR or through NAD+ itself, are therefore among the most intensively studied approaches in aging research. NAD+ is not a hormone, does not bind to hormone receptors, and does not act on the hypothalamic-pituitary axis.

Mechanisms of Action

NAD+ does not act through a single receptor but functions as a hub connecting numerous cellular pathways. The following mechanisms explain why it occupies such a prominent place in research on energy metabolism and aging:

• Cellular energy and redox metabolism: NAD+ is the primary electron acceptor in the catabolic reactions that break down glucose, fatty acids, and amino acids. The NADH produced in the process feeds the electron transport chain and drives ATP synthesis. The ratio of NAD+ to NADH is itself a sensor of the metabolic state of the cell, governing whether energy is stored or released.
• Sirtuin activation: The sirtuins (SIRT1 through SIRT7) are NAD+-dependent enzymes that remove acetyl groups from proteins. They regulate mitochondrial biogenesis, inflammatory signaling, circadian rhythms, and the packaging of DNA, among other processes. Because sirtuins consume NAD+ as a substrate, their activity is directly coupled to NAD+ availability: when the NAD+ pool falls, sirtuin activity falls with it.
• Mitochondrial function: NAD+ is required both for oxidative phosphorylation and for mitochondrial quality control. Through the sirtuins, particularly SIRT3, it influences the generation of new mitochondria and the clearance of damaged organelles. In preclinical models, a depleted NAD+ pool is associated with reduced respiratory capacity and elevated oxidative stress.
• DNA repair: The poly(ADP-ribose) polymerases (PARPs) detect DNA breaks and consume large amounts of NAD+ to recruit repair proteins. Intense DNA damage can place a considerable strain on a cell's NAD+ supply, slowing down other NAD+-dependent processes. A sufficient NAD+ pool is therefore regarded as a prerequisite for effective genome maintenance.
• NAD+ consumption by CD38: The enzyme CD38 cleaves NAD+ and is considered one of the principal drivers of the age-related decline in NAD+. CD38 activity that rises with age, often in the context of low-grade inflammation, accelerates the breakdown of available NAD+ and is a key explanation for why levels fall across the lifespan.
• Calcium signaling: Messengers derived from NAD+, such as cyclic ADP-ribose, are involved in releasing calcium from intracellular stores. This extends the importance of NAD+ beyond pure energy metabolism into the regulation of cellular signaling processes.

Dosage Calculation

NAD+ is used in research in the milligram range, not the microgram range that applies to many classic peptides. Subcutaneous administration is considered sensitive to injection speed, which is why many protocols ramp in gradually from the lower end of the range and increase the dose over several days until tolerability can be assessed.

Standard Dosing Parameters

• Conservative dose: 100 mg per administration
• Standard dose: 250 mg per administration
• Higher range: 400-500 mg per administration
• Frequency: Once daily or a few days per week, depending on the research protocol
• Recommended syringe: 1 mL insulin syringe, since the required volumes are considerably larger than for microgram-dosed peptides

Example Calculation: 1000 mg Vial with 10 mL BAC Water

The common vial size is 1000 mg. Adding 10 mL of bacteriostatic water gives a concentration of 100 mg/mL.

• 100 mg dose: 100 ÷ 100 = 1.0 mL
• 250 mg dose: 250 ÷ 100 = 2.5 mL
• 400 mg dose: 400 ÷ 100 = 4.0 mL
• 500 mg dose: 500 ÷ 100 = 5.0 mL

At a dose of 250 mg, a 1000 mg vial provides 4 administrations. Because the required volumes are relatively large, some research protocols split a single dose or use a smaller reconstitution volume to raise the concentration. Use the NAD+ calculator above to compute exact volumes for any vial size, reconstitution volume, and target dose.

Note on Administration Speed

NAD+ is well known for producing intense but short-lived sensations when administered too quickly. Research protocols therefore consistently recommend a slow injection. The large half-life discrepancy between NAD+ and its precursors is also relevant: with a systemic half-life of only about 1 to 2 hours, NAD+ is metabolized rapidly, which is why administration frequency is a deliberate part of protocol design.

Reconstitution

NAD+ is supplied as a lyophilized (freeze-dried) powder in sealed vials. It must be reconstituted with bacteriostatic water (BAC water) before use. Do not use sterile water for injection for multi-dose vials. BAC water contains 0.9% benzyl alcohol, which inhibits microbial growth and extends the usable window of the reconstituted solution. Note that NAD+ requires larger reconstitution volumes than most peptides because of its milligram-scale dosing.

Step-by-Step Reconstitution Protocol

1. Gather supplies: NAD+ vial, bacteriostatic water vial, alcohol swabs, a sterile draw needle (18-21 gauge), and your 1 mL syringe for injection.
2. Wipe the rubber septa of both vials with fresh alcohol swabs. Allow to air-dry for 30 seconds. Do not blow on the septa or touch them after cleaning.
3. Draw the desired volume of BAC water (10 mL is standard for a 1000 mg vial). Because common syringes are smaller, this step is done in several portions.
4. Insert the needle into the NAD+ vial at an angle, directing the tip toward the inner glass wall rather than the lyophilized powder. Injecting BAC water directly onto the powder cake can foam the material and stress it unnecessarily.
5. Slowly push the plunger, allowing BAC water to run down the inside wall of the vial and gradually contact the powder below. Repeat the steps for each portion until the full volume is transferred.
6. Gently swirl or roll the vial between your palms until the powder is completely dissolved. The solution is typically clear to pale yellow. Do not shake or vortex the vial.
7. Label the vial with the reconstitution date and concentration (e.g., "NAD+ 100 mg/mL, reconstituted [date]").

A slight yellow tint is not unusual for NAD+ solutions. However, if the solution appears cloudy, strongly discolored, or contains visible particulate matter, discard the vial and do not inject it.

Storage and Shelf Life

• Lyophilized powder (unreconstituted): Store at −20°C for long-term storage. Short-term storage at 2-8°C (refrigerator) is acceptable. Keep away from light and moisture, as NAD+ in dry form is hygroscopic. Do not leave at room temperature for extended periods.
• Reconstituted solution: Store in the refrigerator at 2-8°C. NAD+ is less stable in solution than many peptides, so the reconstituted solution should be used promptly. Keep the vial upright and away from light, and write the reconstitution date prominently on the label.
• Do not freeze reconstituted NAD+. Freeze-thaw cycles can degrade the molecule and cause loss of activity. Once reconstituted, the vial must remain refrigerated throughout its use window.
• Transport: Use an insulated cooler with an ice pack for any travel lasting more than 1-2 hours. Commercial insulated medication pouches maintain 2-8°C for 24-48 hours. Avoid exposure to temperatures above 25°C during transport.

Side Effects and Safety Profile

NAD+ is an endogenous compound, and its safety profile in the research context is generally regarded as favorable. The most common observations relate less to the molecule itself than to the speed of administration. Because controlled clinical data on subcutaneous NAD+ are limited, all use explicitly remains in the research domain.

Commonly Reported Observations

• Injection-site reactions such as mild redness, transient swelling, or brief discomfort. Rotating injection sites minimizes localized irritation.
• Flushing-type sensations, meaning a feeling of warmth, chest pressure, or tingling, which typically occur when administration is too rapid. A markedly slower injection substantially reduces these reactions in most cases.
• Transient nausea, dizziness, or a mild headache shortly after administration. These sensations are usually short-lived and subside once the injection is complete.

Less Common or Theoretical Concerns

• Circulatory reactions: Pronounced but short-lived sensations have been described with very rapid administration. A slow injection is the single most important measure for avoiding such reactions.
• Interaction with metabolic state: Because NAD+ acts on central metabolic pathways, its interaction with concurrent interventions that affect energy balance has not been comprehensively characterized.
• NAD+ and cell proliferation: Because NAD+ supports DNA repair and energy metabolism, its role in the context of existing malignancy is discussed with nuance in the research literature. Individuals with active cancer should not use NAD+ without oncological guidance.

Contraindications

• Active cancer or history of malignancy (without medical supervision)
• Pregnancy and breastfeeding (insufficient safety data)
• Known hypersensitivity to any component of the preparation

With slow administration and standard research doses, NAD+ is generally regarded as well tolerated. Given the absence of large-scale clinical trials on injectable use, caution is warranted, and consultation with a qualified healthcare provider is strongly recommended.

Combinations and Stacks

NAD+ + MOTS-c — The Mitochondrial Stack

NAD+ is frequently considered alongside MOTS-c in longevity research, a mitochondrially encoded peptide that acts on metabolic stress. NAD+ provides the coenzyme that drives the respiratory chain, while MOTS-c acts as a signaling peptide that modulates metabolic adaptation. From a research perspective, both address the mitochondrion from different angles, which is why they are often studied together in protocols focused on mitochondrial function.

NAD+ + 5-Amino-1MQ — The Salvage Stack

A conceptually interesting combination is NAD+ with 5-Amino-1MQ. 5-Amino-1MQ is an inhibitor of nicotinamide N-methyltransferase (NNMT), an enzyme that breaks down nicotinamide. By inhibiting this degradation pathway, it can theoretically keep more nicotinamide available for the NAD+ salvage pathway. Research therefore examines how supplying NAD+ and preserving its precursors complement one another.

NAD+ + SS-31 — The Mitochondrial Protection Stack

NAD+ can also be considered alongside SS-31, a peptide that binds to cardiolipin in the inner mitochondrial membrane and supports the efficiency of the electron transport chain. While NAD+ supplies the fuel for the respiratory chain, SS-31 targets the structural integrity of the membrane on which those reactions take place. This combination is a common theme in research on mitochondrial bioenergetics.

Research-grade NAD+ is available directly from BergdorfBio: NAD+ at BergdorfBio.

Frequently Asked Questions

Is NAD+ a peptide?

No. NAD+ is a dinucleotide, not a peptide. It is not made of amino acids but of two linked nucleotides. It is listed in this calculator because it is handled like an injectable peptide in research: it ships as a lyophilized powder, is reconstituted with bacteriostatic water, and follows the same dosing and storage principles.

How does NAD+ differ from NMN and NR?

NMN (nicotinamide mononucleotide) and NR (nicotinamide riboside) are precursors that the cell must convert into NAD+. NAD+ is the finished coenzyme itself. Precursors are frequently studied orally and pass through several metabolic steps, whereas NAD+ is directly the active molecule. Research compares both approaches to understand how the cellular NAD+ pool can be maintained most effectively.

Why does an NAD+ administration take longer than for other peptides?

NAD+ is known for producing intense but short-lived sensations such as warmth, chest pressure, or nausea when administered too quickly. A markedly slower injection substantially reduces these reactions. For this reason, research protocols consistently recommend slow administration.

Why is the half-life of NAD+ so short?

NAD+ has a half-life of only about 1 to 2 hours in the systemic circulation because it is rapidly metabolized by NAD+-consuming enzymes such as CD38 and through salvage pathways. This short half-life is the reason why administration frequency is a deliberately chosen element of protocol design in the research context.

Does NAD+ affect hormone levels?

No. NAD+ is a metabolic coenzyme, not a hormone. It does not bind to hormone receptors and has no direct effect on the hypothalamic-pituitary-gonadal axis, the thyroid, or the adrenal glands. No post-cycle therapy is required.

Can NAD+ be combined with other compounds?

In research, NAD+ is frequently considered alongside mitochondrially oriented compounds such as MOTS-c or SS-31, as well as the NNMT inhibitor 5-Amino-1MQ. Each compound should, however, be reconstituted separately and administered in its own syringe, as their combined stability in solution is not sufficiently characterized.

Which syringe is needed for NAD+?

Because NAD+ is dosed in the milligram range, the required volumes are considerably larger than for microgram-dosed peptides. At a concentration of 100 mg/mL, a 250 mg dose already requires 2.5 mL. A 1 mL insulin syringe is therefore standard, and larger doses are split as needed.

Where can I buy NAD+?

BergdorfBio offers research-grade NAD+ with verified purity and concentration. View the product page: Buy NAD+ at BergdorfBio. All products are sold strictly for research purposes.

Medical Disclaimer: The information on this page is provided for educational and research purposes only. NAD+ is not an approved drug or medical treatment and is sold strictly for research use. Nothing on this page constitutes medical advice, diagnosis, or a recommendation to use any specific compound. Always consult a qualified healthcare professional before beginning any research protocol. BergdorfBio assumes no liability for the use or misuse of the information presented here.