What Are NAD+ Injections?

What Happened When I Took NAD+ Injections for a Month

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Remedy Place NAD  injection pen
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For as long as I can remember, I’ve had a lot of energy. When I was in high school, I used to leap out of bed before my alarm, just champing at the bit to take on the day. That unbridled energy was strong throughout my twenties and even into my mid-thirties, but once I reached my late thirties and early forties, I began to notice a real dip. It suddenly felt much harder to get up in the morning. I started experiencing that midafternoon slump more and more, and I’d catch myself yawning often. Needless to say, I didn’t love the feeling, so I dove into research for a solution.

There are lots of reasons a woman my age might feel more tired, but a big one is the impact of hormonal changes on your mitochondria. When we’re younger, estrogen helps protect mitochondria so they can convert food and oxygen to adenosine triphosphate (ATP), which is basically energy.

 NAD+ (nicotinamide adenine dinucleotide), a cellular metabolite, is another element that protects mitochondrial ATP production and repairs damaged DNA.

 However, as we get into our late thirties and early forties, levels of both NAD+ and ATP start to decline, inhibiting optimal mitochondrial function.
Aside from lower energy, unprotected mitochondria can lead to more oxidative stress, which can impact collagen production, meaning you see duller, thinner, less elastic skin.

 I was noticing this effect as well (which wasn’t fun), so I decided to try an NAD+ supplement to see if it would help.

What Do NAD+ Supplements Do?

NAD+ supplements are designed to raise NAD+ levels in the body to mitigate some of the effects of aging. But NAD+ is a large molecule that’s hard for the body to absorb, so what you’ll typically see in the supplement marketplace are the elements that make up NAD+, such as nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN).

 Oral pills of these precursors can effectively raise your NAD+ levels, but because they have to go through your digestive system, they’re processed more slowly, which makes them less bioavailable than NAD+ that’s injected directly into the bloodstream. I decided to try injections to see what effect a more immediate NAD+ boost might have. As with all supplements and medications, always discuss NAD+ injections with your healthcare provider before starting any new regimen.
Remedy Place logo

Remedy Place NAD+ Smart Pen

My NAD+ Injection Experience

NAD  injections user testing
Everyday Health

Most injectable NAD+ comes in a vial, so you have to use a new needle to measure out the amount every time you want a dose. This smart pen from Remedy Place makes the process much easier. It’s preloaded with 1,000 milligrams (mg) of NAD+, and you adjust the dosage by turning a dial on the pen. The brand suggests starting at 50 mg, but you can go up to 125 mg.

I loved that it came with everything I needed: alcohol swabs, an instruction booklet, a cute travel case, and more than enough needle heads, which were individually packaged so you can pop them onto the pen without risking getting poked. One caveat that I was initially unaware of was that you need to store the pen in the fridge when it arrives. Because this NAD+ is very high-grade and additive-free, customer service assured me mine was still safe to use, even though I’d left it out for about a week. But it’s a good rule of thumb with similar products to check temperature requirements.

injection case holder user testing
Everyday Health

The brand recommends starting with 50 mg every other day for the first week to help you acclimate to the product. I stuck with that for the whole month and never felt I needed more. The injection process took less than three minutes. I’d swab a spot on my lower abdomen with an alcohol pad, attach a packaged needle to the pen (twisting it slightly to pull the cap off), turn the dosage dial to 50 mg, and inject. Then I’d just twist off the needle using its packaging cap, toss it in the trash, and put the pen back in the fridge.

I barely felt the needle going in. The only slightly uncomfortable part was when I pushed the end of the pen to release the dose — there was a slight stinging feeling that lasted a few seconds as the dose dispersed into my bloodstream. But the benefits I felt almost immediately outweighed any minor discomfort.

Within 30 minutes, I had noticeably more energy that felt natural, never overwhelming or jittery. It had become a real challenge to will myself to work out at the end of the day. On NAD+, I was eager to do it and had more stamina. That energized feeling slowly declined at night, allowing me to fall asleep easily and stay asleep. And more benefits started kicking in around week three: My skin looked brighter and actually felt a bit thicker. I also felt like I was having fewer brain-fog moments (another lovely side effect of perimenopause). It wasn’t a night-and-day transformation, but it was enough to catch my attention.

The Verdict

NAD+ injections worked for me in the short term, and I’m keen to continue using NAD+ in some form to see how the benefits evolve. That said, research on the effectiveness of NAD+ supplementation is still in its infancy, so take my experience with a grain of salt. NAD+ supplements are generally considered safe, but they should be avoided if you’re pregnant, breastfeeding, or have active cancer. While I didn’t notice any negative side effects (apart from mild discomfort at the injection site), they can include nausea, upset stomach, temporary fatigue, headaches, and flushing.

 If you’re interested in trying a NAD+ supplement or NAD precursor, consult your doctor first to make sure it’s right for you.

Other Places to Get NAD+ Injections

You can get injectable NAD+ online via several reputable pharmacies. Note that supplements are not fully regulated in the United States. When vetting brands, look for quality indicators, such as a GMP-certified facility and third-party testing. Aside from Remedy Place, here are the ones we recommend: 
agelessrx logo

AgelessRX

hone logo

Hone Health

See our full list of places to get NAD+ online here.

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Ally Hirschlag

Ally Hirschlag

Author

Ally Hirschlag is an award-winning journalist with over 10 years of experience editing and writing health, fitness, beauty, lifestyle, and science content. Her work has appeared in...

Justin Laube

Justin Laube, MD

Medical Reviewer

Justin Laube, MD, is a dual board-certified integrative and internal medicine physician, retreat leader, and healing educator with over 15 years of experience caring for patients w...

Olivia Campbell

Editor

Olivia Campbell is the New York Times bestselling author of Women in White Coats: How the First Women Doctors Changed the World of Medicine and Sisters in Science: How Four Women P...

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Resources
  1. Yu Y et al. Mitochondrial Dysfunction in Perimenopausal Mood Disorders: From Hormonal Shifts to Neuroenergetic Failure (Review). International Journal of Molecular Medicine. December 2025.
  2. NAD (Nicotinamide Adenine Dinucleotide). Cleveland Clinic. February 26, 2026.
  3. Sreedhar A et al. Mitochondria in Skin Health, Aging, and Disease. Cell Death & Disease. June 9, 2020.
  4. Biţă A et al. Nicotinamide Riboside, a Promising Vitamin B3 Derivative for Healthy Aging and Longevity: Current Research and Perspectives. Molecules. August 15, 2023.
  5. NAD+ Supplements: Can They Really Slow Down Aging? Cleveland Clinic. February 26, 2026.