NAD+ Refill Vial
2000mg vial, offering double the typical NAD+ dose. No inflated pricing. Manufactured by us and independently tested to ensure premium quality. For use with injection.
Description
This pack contains 2000mg vial of pharmaceutical grade NAD+ (nicotinamide adenine dinucleotide), double the standard dose found in most NAD+ kits, providing a more potent and effective approach to cellular support.
We manufactured in-house to pharmaceutical-grade standards, ensuring consistency, stability, and bioavailability.
There are no inflated markups, no unnecessary extras, just high-quality NAD+, delivered with insulated packaging, in letterbox-friendly packaging.
- 2000mg total NAD+ per pack
- Third-party tested for purity and potency
- Premium performance, competitively priced
Accessories such as pens, needles, wipes, and sharps bins can be purchased separately and are shipped independently from this refill pack.
Note: This product is intended for adult use only, designed to support a healthy lifestyle. It is not meant to diagnose, treat, cure, prevent, or manage any disease or medical condition. Always consult your healthcare professional.
What's Included
1 x 2000mg NAD+ Vial - a single high-purity vial containing 2000mg of NAD+, suitable for subcutaneous or intravenous use under professional supervision. Offers over twice the concentration found in typical NAD+ products.
Insulated packaging - delivered with cold packs in discreet, letterbox-friendly packaging to maintain freshness and potency.
Dosage & Usage
Each vial provides approximately 40 x 50mg doses, though exact usage may vary depending on your protocol.
Suggested usage pattern:
- 50mg daily for the first 5 days
- Then every other day as maintenance
- One vial typically lasts 6 to 8 weeks, depending on your routine
- Consistency is key
Always keep refrigerated for maximum efficacy.
Dosage is highly individual, some users take it daily, others every few days. Adjust based on your needs and guidance.
Certificate of Analysis
January 2026 sample CoA
Holte NAD+ is manufactured in a GMP compliant facility under documented quality systems. Every batch undergoes independent third party laboratory analysis before release.
We conduct in-house testing during production to verify concentration, clarity, pH, and batch consistency. This allows us to confirm the correct dosage and purity before a batch leaves our facility.
Each finished batch is then sent to an independent UK laboratory for third-party verification. They test NAD+ concentration and microbiological safety and issue an official Certificate of Analysis.
This dual-layer process means we are not marking our own homework. Internal results must match independent lab findings before approval.
For a subcutaneous product, dosing accuracy matters. Independent verification ensures you receive the stated strength, with consistent purity and safety from batch to batch.
Shipping & Storage
We ship all NAD+ products thermally protected with DPD Next Day 12pm, to keep them potent and effective. You must promptly refrigerate your NAD+ upon delivery.
- Orders placed after 10am are dispatched the next working day.
- Delivery arrives the day after dispatch.
- You’ll receive tracking details once your order is on its way.
- Shipping Monday - Thursday. Orders placed after 10am Thursday will be shipped the following Monday.
- Please ensure your availability to take delivery any delays caused by failed delivery attempts are not the fault of Holte Health.
- Short periods out of cold storage do not affect the product, so place it in the fridge when you receive it.
Cost
Free UK shipping on all orders over £100. Orders under £100 are charged at £4.95.
Returns
All sales are final. Due to the specific nature of our products, we are unable to accept returns or exchanges once an order has been processed and payment received.
Why do we have this policy?
- Temperature Integrity: Our NAD+ vials require specific cold storage temperatures to maintain potency. Once a product leaves our facility, we cannot verify that it has been kept within the necessary temperature range. A returned product cannot be safely resold or reused without risking compromised quality.
- Strict Quality Control: We adhere to rigorous safety protocols during manufacturing and initial shipping. Accepting returns introduces a "chain of custody" break where we cannot guarantee the safety or sterility of the vials. For your safety and the safety of all our customers, we do not restock returned items.
Storage
Keep NAD+ in the refrigerator between 2 and 8°C.
Short periods at room temperature are fine during use, just return it to the fridge as soon as you can.
Do not freeze.
Keep out of reach of children and store in the original packaging.
NAD+ Refill Vial
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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The Science
Why Your Body Needs NAD+
NAD+ helps support cellular energy, repair pathways, and healthy ageing. Levels naturally decline with age.
Cellular Energy
NAD+ fuels mitochondria, your cells' power plants. Higher levels mean more sustained energy throughout the day without stimulants.
DNA Repair
NAD+ activates sirtuins and PARP enzymes responsible for repairing damaged DNA, a key factor in healthy ageing and longevity.
Longevity Support
Published research links NAD+ to improved metabolic function, better sleep, sharper cognition, and reduced inflammation.
The Facts
The molecule your cells can't function without
Research suggests NAD+ levels naturally decline with age. Lower levels have been associated with reduced cellular energy and slower recovery.
Relative NAD+ levels (%)
Fuel your body at a cellular level
NAD+ supports over 500 enzymatic reactions in your body. Our NAD+ delivers pharmaceutical-grade NAD+, selected for purity, absorption, and real results.
Sustained energy
NAD+ fuels mitochondria, your cells' power plants, helping your body function at its best.
Mental clarity
Supports brain cell repair and neurotransmitter function for sharper focus and cognition.
Recovery & repair
Activates sirtuins and PARP enzymes that repair damaged DNA, key to healthy ageing.
Better sleep
Regulates circadian rhythm and cellular processes linked to deeper, more restorative sleep.
Consistency is Key
Loading phase. Some users feel a dip in energy over the first few days, but most start noticing benefits within this window. Mild sensitivity around the injection site is normal.
Deeper benefits set in: healthier hormone regulation, sharper mental performance and improved sleep quality. Visible gains in hair, skin and nails. Injection site sensitivity typically subsides.
Healthy hormone regulation, mental performance, sleep quality. Improved hair, skin and nails.
Sustained restoration of NAD+ levels and cellular energy production. Supports cardiovascular markers and overall physical and mental wellbeing.
How Holte Compares
| NAD+ Vial | IV Clinic (250mg) | Oral NMN | |
|---|---|---|---|
| Bioavailability | ~100% | ~100% | 20% |
| Cost per 1000mg from | £130 | £1,000–2,000 | Varies |
| At home | ✓ | ✗ | ✓ |
| Time per session | 1 minute | 2–4 hours | 30 seconds |
| 3rd party lab tested | ✓ | Varies | Varies |
| 99.5%+ purity | ✓ | Varies | Varies |