NAD+ Injections: A Beginner's Guide for UK Users

Have you found yourself asking the question, “Are NAD+ injections right for me?”, if so, you’re not alone. NAD+ injections are becoming increasingly popular in the UK for their potential to improve energy, support healthy ageing and enhance overall wellbeing. If you are curious about this treatment, this beginner-friendly guide explains what NAD+ is, how injections work, the key benefits, safety information and how Vivere makes it simple with at-home administration.

• NAD+ (nicotinamide adenine dinucleotide) is a coenzyme vital for energy production, repair and healthy cell function.

• NAD+ injections replenish natural levels that decline with age, supporting energy, cognition, metabolism and cellular repair.

• Benefits may include improved focus, recovery, athletic performance, and reduction of age-related signs such as fine lines and tissue decline.

• Vivere’s NAD+ pen makes treatment easy at home, with a full kit including all the tools you need provided, as well as refill cartridge options available for ongoing support.

• Side effects are usually mild, but we recommend getting advice from a healthcare provider before you start any new therapy. You should also seek medical advice if you have health conditions such as cancer.

NAD+ stands for nicotinamide adenine dinucleotide. It is a naturally occurring coenzyme found in every cell in the body. NAD+ acts as a “helper molecule”, binding to enzymes and activating essential reactions. These include turning food into energy, repairing DNA and reducing oxidative stress. NAD+ also supports mitochondria, often called the “powerhouses of the cell”, which produce the energy your body needs to function.

As we age, NAD+ levels decline, particularly in those over the age of 30. Lower levels are linked to fatigue, slower recovery, reduced mental clarity and visible signs of ageing.

Interested in learning more? If so, take a look at our beginner’s guide to NAD+.

NAD+ injections deliver this coenzyme subcutaneously into the body. Unlike oral supplements (such as NAD+ precursors like NMN and NR), which are partly broken down in the digestive system, injections provide more direct absorption. Some clinics offer intravenous (IV) infusions, but Vivere’s NAD+ pen allows you to self-administer safely at home. This makes treatment quicker and more convenient while still ensuring effective delivery of NAD+ into your system.

People across the UK are exploring NAD injections for their broad potential benefits, which include:

• Energy support - reducing fatigue and maintaining daily performance.

• Cellular repair - aiding DNA repair and maintaining healthy cell function.

• Mitochondrial function - supporting the body’s ability to generate energy at a cellular level.

• Anti-ageing - helping reduce fine lines, wrinkles and tissue decline associated with ageing.

• Cognitive health - supporting clarity, memory and focus.

• Metabolic function - improving metabolism and weight management.

• Immune system support - strengthening the body’s natural defences.

• Athletic performance and recovery - helping active individuals recover faster and perform better.

• Gut health - strengthening the gut barrier, reducing inflammation and influencing the production of short-chain fatty acids (SCFAs), which support gut integrity.

Vivere’s NAD+ injection kit is unique because it combines clinical-grade quality with convenience and safety. Unlike other products, it is the only NAD+ manufactured in a UK-based facility that holds both MHRA licensing and GMP certification for sterile liquid production. It is also the only NAD+ supplied through an NHS-approved and UKAS-accredited partner, ensuring strict standards of safety and reliability.

The injection pens are also designed for easy at-home use, making it simple to restore natural NAD+ levels without the need for clinic visits.

By supporting cellular repair, boosting energy and mood, improving sleep and reducing oxidative stress, Vivere’s NAD+ injections provide a trusted, high-quality option for those looking to enhance both mental and physical well-being.

NAD+ injections may be suitable for adults who want to feel more energised, improve their focus, or explore anti-ageing treatments. They may also appeal to people with busy lifestyles, athletes seeking recovery support, or anyone aiming to optimise their health at a cellular level.

However, they are not for everyone. If you have cancer, or have been treated for cancer within the last three years, you should consult your doctor before starting NAD+ therapy.

With Vivere’s NAD+ pen, home administration is simple and precise. The treatment typically begins with three consecutive daily injections of 50mg (15 units on the Vivere pen), followed by every other day. Once the initial phase is complete, ongoing refills can be used to maintain your routine without buying a full kit again.

The kit includes: 

• 1x NAD+ Injection Pen - RRP £14.99

• NAD+ Cartridges

• 1 months supply - 1x1000mg/3ml

• 2 months supply 2x1000mg/3ml

• 3 months supply - 3x1000mg/3ml

• 1x NAD+ Travel Case by Vivere (inc. cool pack) - RRP £29.99

• Micro-Needles (enough for your order)

• Alcohol Wipes (enough for your order)

• Sharps Bin

Refills provide replacement NAD+ cartridges, which makes continued treatment easier and more cost-effective.

Most people describe the injections as a mild pinching or stinging sensation at the point of administration. Discomfort is usually brief and tolerable. To avoid discomfort, we recommend rotating injection sites. Vivere NAD+ can be injected into the belly, thigh, or upper arm.

UK-based customers who are interested in supplementing NAD+ can purchase their NAD injections directly from Vivere.

• Vivere’s NAD+ is the only NAD+ produced in a UK-based facility that holds both MHRA licensing and GMP certification for sterile liquid manufacturing. Additionally, it’s also the only NAD+ product supplied through an NHS-approved and UKAS-accredited partner.

NAD+ injections are generally considered safe and well-tolerated. Some users may experience temporary side effects at the injection site, such as:

• Redness

• Swelling

• Tenderness

• Bruising

These usually resolve within a few days. NAD+ is also regarded as having low toxicity when used at the correct dose. If you notice unusual or persistent symptoms, it is best to consult a healthcare professional.

Some people notice benefits within a few days, such as increased energy or improved focus. For others, results may take longer depending on health, lifestyle and consistency of use, or shorter for some.

Frequency depends on your personal goals. Some people use NAD+ injections regularly as part of their wellness plan, while others prefer occasional top-ups. A healthcare professional can help decide the best approach for you. We recommend 50mg of NAD+ per injection (15 units on the Vivere pen) injected for 3 consecutive days, then followed every other day.

IV infusions deliver NAD+ directly into the bloodstream and are commonly offered in clinics. Vivere’s injection method provides a convenient at-home alternative, with precise dosing and ongoing refill support, without the need for lengthy in-person visits.

NAD+ cartridges should be stored in the fridge at a constant temperature between 2 and 8°C to preserve their quality and extend their shelf life. They are delivered with cool packs to maintain the correct temperature, and once received, they should be placed in the fridge immediately. Cartridges can remain effective for up to 24 months when stored properly, away from direct sunlight, heat or moisture.

For best results, we recommend starting with one injection per day for the first three days, then continuing with injections every other day. The typical dosage is 50mg per injection, which equals 15 units on the Vivere pen. You can take your injection at whatever time of day suits you best.

The Vivere NAD+ injection pen is designed to make it easy to optimise your levels at home, as each cartridge is pre-measured for accurate dosing. To keep an eye on your NAD+ levels, you can take a NAD+ blood test. We recommend doing so before you begin supplementation and at regular intervals during your routine to monitor progress.

Yes, when used as directed. NAD+ injections have a low toxicity risk and are generally safe, but it is always important to follow instructions carefully and consult a healthcare professional if you have underlying conditions.

NAD+ injections are a modern approach to supporting energy, cellular repair and healthy ageing. With benefits that range from improved focus to better recovery and skin support, they are becoming a popular choice in the UK for people wanting to optimise their wellbeing. Vivere’s at-home injection pen makes the process easy, safe and convenient. If you are considering NAD+ injections, start with professional advice to ensure this treatment aligns with your personal health goals.

Vivere helps you take control of your health with personalised insights from state-of-the-art gut microbiome testing, nutritional guidance, science-backed biohacking supplements, NAD+ supplementation and expert support. Sign up today and start living better, for longer.