NAD+ Refill Cartridges (2000mg NAD+)

Healthy aging from within.

This refill pack includes 2 x 1000mg NAD+ cartridges, designed for use with the Hōlte NAD+ Pen™ however can be used in other pens. Each cartridge delivers a high-purity dose of NAD+ to support energy metabolism, mental clarity, and healthy cellular aging — from the inside out.

Unlike most NAD+ pen products, Hōlte cartridges are manufactured in-house to pharmaceutical standards, ensuring optimal purity, stability, and bioavailability. With 2000mg per pack, you're getting twice the typical dose — without inflated markups or unnecessary add-ons.

• 2000mg total NAD+ per pack
• Third-party tested for purity and potency
  

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.

2 x 1000mg NAD+ Cartridges (2000mg total) - High-purity NAD+ cartridges designed for use with the Hōlte NAD+ Pen™ and other compatible micro-needle pens. Each cartridge delivers 1000mg of NAD+ with nearly 100% bioavailability via transdermal delivery.

Cold-chain packaging - shipped with cold packs in discreet, letterbox-friendly packaging to preserve potency and ensure freshness on arrival.

Note: This product does not include the Pen or accessories. The Hōlte NAD+ Pen™, wipes, and sharps bins can be purchased separately and are shipped independently.

How to Use Your Hōlte NAD+ Pen®
This guide provides step-by-step instructions to safely and effectively use your Hōlte NAD+ Pen® for subcutaneous injections. Please follow the steps carefully to ensure proper use.

1. Setting Up the Pen

• Prepare the Pen and Cartridge
  Remove the Hōlte NAD+ Pen® and an NAD+ cartridge from their packaging.
• Allow the NAD+ cartridge to rest at room temperature for 5–10 minutes.
  

2. Unscrew the Cartridge Holder

• Take the lid off the pen to expose the clear cartridge holder.
• Unscrew the clear cartridge holder from the base of the pen.
• If the plunger is exposed, press it into the base of the pen with your finger.
  

3. Insert the NAD+ Cartridge

• Take the NAD+ cartridge and insert it into the clear cartridge holder with the silver tip going in first.
• Screw the clear cartridge holder (with the NAD+ cartridge inside) back onto the base of the pen firmly.

4. Prime the Pen

• Twist the base of the pen until the dose meter is fully extended.
• Push the dose meter back in and watch the plunger move up inside the cartridge holder.
• Repeat this process until the plunger touches the bung at the bottom of the cartridge and you feel resistance.
• Your pen is now prepped and ready for daily use. Continue with the steps below.
  

Administering your NAD+ subcutaneous injection

1. Attach the needle

• Take a 4mm needle tip from the pack and gently but firmly screw it onto the end of the Hōlte NAD+ Pen®.
• Do not remove the needle tip cover yet

2 . Clean the injection site

• Use an alcohol wipe to clean the injection site.
• Choose a fatty area such as the abdomen (belly). Rotate the injection site each time to avoid skin damage or dimpling.

3. Set your dose

• Twist the base of the pen until the pointer lines up with your prescribed dose:
  30 units (0.3ml) for a high dose.
  15 units (0.15ml) for a maintenance dose.
• Remove both the outer and inner needle tip covers.
  

4. Administer the Injection

• Gently pinch the skin around the injection site, pulling it about 4mm away from the muscle.
• Place the needle at the injection site and press the pen down to pierce the skin.
• Press the button at the base of the pen to depress the plunger and administer the NAD+.
• Hold the pen steady and count down three seconds before removing the needle.

5. Dispose of the Needle

• Carefully replace the outer needle tip cover.
• Unscrew the needle tip with the cover on and dispose of it in the sharps bin provided.

6. Store the Pen

• Replace the pen lid.
• Store the Hōlte NAD+ Pen® in the fridge (between 2–8°C / 35.6–46.4°F) to keep the NAD+ cartridge fresh.

Important Notes for Safe Use

• Rotate injection sites to prevent skin damage or dimpling.
• It is normal to experience the following after an injection:
• A drop of NAD+ or blood on the skin.
• A small bruise if the needle wasn't kept steady.
• A temporary red mark at the injection site. This will fade and is harmless.
  If concerned about visible marks, consider injecting in areas covered by clothing.
• Use a free needles for each use
• Use NAD+ cartridges before their expiration date.
• Keep cartridge refrigerated
  

Confirmation of understanding

By using the Hōlte NAD+ Pen®, you confirm the following:

1. You will administer NAD+ subcutaneously only, as instructed.
2. You understand the risks (e.g., allergic reaction, infection) and commit to following the instructions exactly.
3. You are competent to perform subcutaneous injections and will dispose of needles appropriately.
4. Hōlte is not responsible for any adverse effects caused by improper use or failure to follow the instructions.

Important: This product is not intended to diagnose, treat, or cure any condition. Always consult a healthcare professional before starting NAD+ injections. Use sterile technique to avoid contamination or infection.

Each pack contains 2 x 1000mg cartridges of high-purity NAD+, designed for use with the Hōlte NAD+ Pen™ or compatible micro-needle devices.

A typical dose is 100mg per use, meaning each cartridge provides approximately 10 doses — for a total of 20 doses per pack, depending on your wellness protocol.

Suggested usage pattern:

• 100mg daily for the first 3 days
• Then every other day as maintenance
• One cartridge typically lasts 2–4 weeks, depending on your personal routine so double that for the two cartridges includes

NAD+ is a naturally occurring molecule that plays a vital role in supporting key cellular processes. While maintaining healthy NAD+ levels is linked to overall wellness, our NAD+ Pen™ is designed to encourage and support a healthy, balanced lifestyle.

• Supports Energy Production: NAD+ is central to cellular energy processes, helping your body function at its best.

• Encourages Cellular Maintenance: A key component in supporting natural cellular repair mechanisms.

• Promotes Wellness: Plays a vital role in maintaining a healthy metabolic balance.

• Supports Healthy Aging: A fundamental molecule involved in cellular health as part of a balanced lifestyle.

Please note: These statements have not been evaluated by the Food Standards Agency. This product is not intended to diagnose, cure, manage, prevent, or treat any disease or condition.

We ship all Holte NAD+ Pens and refills chilled with DPD Next Day to keep them in perfect condition.

• Orders placed today are dispatched the next working day.
• Delivery arrives the day after dispatch.
• You’ll receive tracking details once your order is on its way.

Cost

Free UK shipping on orders over £100

£8 delivery for UK orders under £100