# NAD+ Capsules

> NAD+ research capsules for oral-route studies — 300 mg of the coenzyme each

All products are sold strictly for laboratory research use only. Not for human or veterinary use.

- Web page: https://peptidemedixeu.com/en/products/nad-plus-capsules/
- Brand: Peptide Medix EU
- Category: [NAD+ & Glutathione](https://peptidemedixeu.com/en/collections/nad-glutathione/)
- CAS number: 53-84-9
- from €51 (EUR)

## Sizes and prices (EUR)

| Size | Price | SKU |
| --- | --- | --- |
| 300 mg · 60 capsules | €51 | NAD-PLUS-CAPSULES-300-MG-60-CAPSULES |

_Catalog prices at build time; the web page and checkout are authoritative._

## Specifications

- **CAS number:** 53-84-9
- **Molecular formula:** C21H27N7O14P2
- **Molecular weight:** 663.43 g/mol
- **Form:** Oral capsules in a sealed bottle with desiccant and tamper-evident closure
- **Content per capsule:** 300 mg NAD+ (free acid)
- **Available counts:** 60 capsules
- **Purity (raw material):** ≥99% by HPLC; lot-matched COA available
- **Active compound:** NAD+ (nicotinamide adenine dinucleotide), oxidised form
- **Chemical class:** Dinucleotide coenzyme — not a peptide
- **Also known as:** Nicotinamide adenine dinucleotide, oxidised NAD, DPN
- **Enzyme substrate for:** Sirtuins (SIRT1–7), PARP family, CD38/CD157
- **Research areas:** Cellular redox state, mitochondrial metabolism, DNA repair signalling, ageing biology, oral bioavailability of NAD precursors
- **Storage:** Cool, dry and dark in the sealed bottle; refrigeration extends shelf stability

## Description

These capsules supply nicotinamide adenine dinucleotide (NAD+) as a fixed oral research unit of 300 mg instead of a lyophilised vial. The molecule is exactly what our NAD+ vials contain — the oxidised free acid of the dinucleotide coenzyme, CAS 53-84-9, C21H27N7O14P2, 663.43 g/mol — assayed against a ≥99% HPLC specification and documented with a certificate of analysis for each lot.

NAD+ lies at the heart of cellular redox chemistry, accepting electrons for hundreds of dehydrogenases, and sirtuins, PARPs and CD38 use it up as a substrate. Oral-route research concentrates on one question: does the intact dinucleotide survive digestion, or is it broken down to precursors such as nicotinamide riboside and nicotinamide before absorption? That remains unresolved and is a frequent study endpoint.

## Frequently asked questions

### What does a single capsule hold?

300 mg of NAD+ (the oxidised free acid of nicotinamide adenine dinucleotide); each sealed bottle has 60 capsules. The raw material matches our NAD+ vials, assayed to ≥99% by HPLC with a certificate for each lot.

### Does NAD+ taken by mouth get absorbed intact?

Nobody knows for certain yet. NAD+ is a big, charged, chemically fragile molecule that gut glycohydrolases can cleave, so studies ask whether any rise in measured NAD reflects intact absorption or breakdown into precursors followed by rebuilding via the salvage pathway.

### NAD+ or NMN — which suits my research?

NMN is a smaller, more soluble salvage-pathway precursor that NMNAT enzymes convert into NAD+; NAD+ is the end product. To shift the coenzyme pool, many studies prefer a precursor; assays that need NAD+ itself as an enzyme substrate use the dinucleotide directly.

### Can I see a certificate of analysis?

Yes. The NAD+ in these capsules is HPLC-analysed against a ≥99% purity specification, and a COA stating identity, method and measured purity for your lot is available on request, before or after you order.

### How are the capsules best stored?

Keep the bottle closed, cool, dry and dark with the desiccant inside; refrigeration extends shelf life. Let a cold bottle reach room temperature before opening so moisture doesn't condense on the contents, and don't leave it open in humid air.

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All products offered on this website are intended solely for in-vitro laboratory research and development by qualified professionals. They are not drugs, foods, cosmetics or dietary supplements, and are not intended to diagnose, treat, cure or prevent any disease. Products must not be introduced into humans or animals in any manner. By purchasing, you confirm that you are a qualified researcher and accept full responsibility for handling and storage in accordance with applicable laws.

Peptide Medix EU · https://peptidemedixeu.com/en/products/nad-plus-capsules/