NAD+ AT HOME Refill x2 500mg
The at-home, self-injectable wellness kit everyone's talking about. Pharmaceutical-grade NAD+ that boosts energy, clarity and skin repair, replenished on your own schedule.
ISO-certified labs · ~100% bioavailability · Discreet, tracked UK dispatch
Description
Our NAD+ Refill Kit provides a fresh supply of Nicotinamide Adenine Dinucleotide (NAD+) for continued energy, focus, and cellular rejuvenation. Perfect for those already using the NAD+ Injection Penthis refill ensures you can seamlessly continue your course without interruption.
NAD+ is an essential coenzyme found in every living cell, responsible for driving energy metabolism, repairing DNA, and maintaining healthy mitochondrial function. As we age, NAD+ levels naturally decline, leading to fatigue, brain fog, slower recovery, and visible ageing. Supplementing NAD+ restores optimal function at the cellular level, promoting longevity and vitality from within.
Formulated for maximum bioavailabilitythis advanced injectable solution ensures rapid systemic absorption and near-complete cellular utilisation, delivering the fastest and most efficient NAD+ replenishment available.
Key Benefits:
Supports mitochondrial energy production and combats fatigue
Promotes DNA repair and anti-ageing cellular rejuvenation
Enhances focus, cognitive clarity, and mood balance
Supports muscle recovery and metabolic performance
Improves sleep quality and stress resilience
Convenient refill system, no clinic visits, no downtime
What’s Inside the NAD+ Refill Kit?
- 2 × Cartridges containing 500mg/3ml of NAD+ each (1,000mg total)
- 20 × Micro-Needles
- 20 × Antibacterial Wipes
- 1 × Sharps Bin (for safe disposal)
Please Note: This refill kit does not include:
- 1 × Premium Auto-Injector Pen
- 1 × Travel Case with Cold Cooler Packs
How to use
Step 1: Insert a full NAD+ cartridge into your auto-injector pen.
Step 2: Load one micro-needle, ensuring it’s secure and sterile.
Step 3: Administer your chosen dosage subcutaneously (typically 0.25ml per dose).
Step 4: Dispose of used needles safely in the sharps bin.
Step 5: Store remaining cartridges in the refrigerator (2–8°C) between uses.
Recommended Protocol: One 50mg dose daily for the first three days, followed by every other day, or as advised by your practitioner.
Ingredients (INCI)
Nicotinamide Adenine Dinucleotide (NAD+) 500mg per 3ml cartridge. Other Ingredients: Sterile Water for Injection, Sodium Chloride (for osmolar balance), Pharmaceutical-grade stabilisers to preserve molecular integrity and antioxidant activity. Formulation: Non-GMO, preservative-free, sterile, and manufactured under ISO-certified pharmaceutical conditions.
The benefits of NAD+
NAD+ is the coenzyme every cell uses to make energy and repair itself. Levels fall as we age, replenishing it supports how you feel, think and look.
Boost energy
Fuels mitochondrial energy production for sustained, all-day vitality.
Skin renewal
Supports cellular turnover for smoother, more radiant-looking skin.
Mental clarity
Helps sharpen focus, memory and cognitive performance.
Age from within
Powers DNA repair and healthy cellular ageing at the source.
Twin-pack of 500mg pharmaceutical-grade NAD+ refill vials for existing NAD+ AT HOME kit users
Maintains consistent NAD+ supplementation without purchasing a full kit each time
Compatible with standard NAD+ AT HOME injection kit equipment
Supports ongoing cellular energy production, DNA repair and metabolic function
More economical than full kit purchases for repeat treatment sessions
A few quiet minutes, every other day
No clinic, no appointments. Each kit comes with everything you need for a hygienic at-home routine, plus a step-by-step guide. Refrigerate on arrival, rotate sites, and let your cells do the rest.
The science of NAD+
Nicotinamide Adenine Dinucleotide (NAD+) is a vital coenzyme found in every living cell, responsible for driving energy metabolism, DNA repair and cellular communication. As we age, NAD+ levels naturally decline, leading to fatigue, slower recovery and visible signs of ageing.
Replenishing NAD+ reawakens cellular vitality and supports healthy metabolic function. Delivered subcutaneously, it bypasses the digestive system for exceptional absorption, so your cells can begin using it almost immediately.
NAD+ powers the sirtuin and PARP enzymes that regulate cellular repair, inflammation and gene expression. Raising NAD+ availability has been shown to mimic the effects of caloric restriction, extending cellular lifespan and improving metabolic resilience.
Close to 100% bioavailability
Oral supplements are largely broken down in digestion. Delivered subcutaneously, NAD+ reaches your system directly, so cells can start using it straight away for energy and repair.
How to use
Step 1: Insert a full NAD+ cartridge into your auto-injector pen.
Step 2: Load one micro-needle, ensuring it’s secure and sterile.
Step 3: Administer your chosen dosage subcutaneously (typically 0.25ml per dose).
Step 4: Dispose of used needles safely in the sharps bin.
Step 5: Store remaining cartridges in the refrigerator (2–8°C) between uses.
Recommended Protocol: One 50mg dose daily for the first three days, followed by every other day, or as advised by your practitioner.
How to inject, step by step
A calm, straightforward walkthrough so your first time feels easy. Watch whenever you need it.
Always follow the printed guide included in your kit.
Energy, brightness, clarity, and if I have a drink, I don't get hangovers anymore. Genuinely one of my favourite things we stock.
Expert-selected by The Skin Bay to work alongside NAD+ - both formulated to complement each other for enhanced results.
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Your questions answered
Is NAD+ safe to use at home?
Yes, when used as directed. Each kit is produced in ISO-certified labs, batch-tested for purity, and includes everything for hygienic self-administration plus a step-by-step guide and video. Always speak to your practitioner first if you are pregnant, breastfeeding or managing a health condition.
How soon will I feel a difference?
Many people report increased energy, clarity and focus within the first week. NAD+ works best taken consistently across the full protocol.
How often should I use it?
If it is your first time, use one 0.25ml micro-injection daily for the first three days, then move to every other day. Each vial holds roughly 20 doses.
Why injection instead of a capsule?
Subcutaneous delivery bypasses the digestive system, where much of an oral dose is broken down. That gives NAD+ close to 100% bioavailability, so your cells can use it straight away.
Will the injection hurt?
It can sting slightly and small bruises are not unusual. Take the vial out of the fridge about 30 minutes beforehand, as cold solution stings more. Pinch the skin, insert at a 45 degree angle just under the skin, and rotate sites each time.
Where is best to inject?
The needles are for subcutaneous injection, just under the skin into fatty tissue. The stomach, hips or buttocks all work well. Rotate the site with each dose to minimise irritation.
Who is NAD+ not suitable for?
NAD+ is not suitable for anyone under 18, or with an allergy to NAD+ or sterile solutions. Please avoid it, or speak to your doctor first, if you have or have had: active or previous cancer, pregnancy or breastfeeding, Lyme disease, a recent skin graft, atrial fibrillation, immunosuppression, an organ transplant, or a history of Haemophilus influenzae.
Are there any side effects?
Most people notice none and simply feel alert and energised. Occasionally there can be temporary tiredness for a day or two, or mild sensitivity at the injection site. If that happens, choose a different site next time, and stop if anything feels unusual.
What colour should the solution be?
A transparent liquid that is either colourless or has a light yellow tint. Both are completely normal.
How should I store it, and what is the shelf life?
Refrigerate the vial for optimal freshness. Unopened and stored correctly it keeps its quality for 12 months. NAD+ also stays stable at room temperature for several weeks, so a day in transit is no problem.
How do I dispose of the needles and vial?
Place all used needles and the empty vial into the sharps bin provided, making sure nothing sticks out of the top.
How is this different from an IV drip?
It delivers the same NAD+ benefits with near 100% bioavailability, but on your own schedule and at a fraction of the cost of in-clinic IV therapy. No appointments, no waiting rooms.
How is it delivered?
Discreetly and tracked across the UK, packed with a cool pack to keep it in perfect condition. A Certificate of Analysis is available on request.