"THREE WEEKS IN AND I AM WALKING MY DOGS AGAIN." - SHELLY D

"I FINALLY SLEPT ON MY SIDE AGAIN." - JANET

"MY HIPS STOPPED ACHING AFTER WEEK FOUR." - DELILAH

"BY WEEK 6 MY KNEE PAIN WAS GONE TOO." - LISA R
Boost Labs CelluNAD+ liposomal drops bottle

Excellent | 3,471 Trusted Reviews

Boost Labs CelluNAD+ (Nerve Support)

Two droppers that refuel your starving tendons, so you can walk, sleep and move like yourself again.

Walking Again

Walking my dogs again

Side Sleep Back

Slept on my side again

Easy Mornings

Hands stopped aching in the morning

Pain Free

I can do whatever I want

93% Sold
$59.99
$59.99

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90-Day Money-Back Guarantee

If it doesn't work for you, return it within 90 days for a full refund. No questions asked.
Beware Of Amazon LookalikesCelluNAD+ is not sold on Amazon. The real thing is only at byboostlabs.com.Read more ⌄

We want you to know exactly what you're getting. CelluNAD+ is only sold on our site, and here's why that matters:

  • We handle every order ourselves. You're never sent to a marketplace to chase your money.
  • Every batch is third-party tested. An outside lab (Eurofins) confirms the bottle has what the label says.
  • It's made in the USA. In a GMP-certified facility.
  • Every dose is on the label. No proprietary blend.

If you see NAD+ drops on Amazon using our name or look, they didn't come from us. The real, USA-made CelluNAD+ is only at byboostlabs.com.
  • What Causes It
  • The Science
  • How to Use
  • Ingredients

It's probably not arthritis. It's your tendons, and the cells that repair them are out of fuel.

Every step, every stair, every night on your side puts tiny tears in your tendons. Your body repairs them overnight, and that repair runs on a cellular fuel called NAD+. When the fuel runs low, the tears pile up faster than your cells can fix them, and that's the ache that keeps coming back.

Read more ⌄

By age 50 you have about half the NAD+ you had at 30, and it drops fastest when estrogen falls in menopause. That's why the ache showed up in your 40s or 50s, why it spread from one joint to the next, and why it started waking you at night.

It shows up wherever your tendons work hardest:

  • Can't sleep on your side? Usually the gluteal tendon in your hip.
  • Reaching overhead hurts? The rotator cuff.
  • Knees hurt on the stairs? The patellar tendon.
  • First steps in the morning feel like broken glass? The plantar fascia in your foot.

Cortisone, pain pills and rest are aimed at the flare-up. They quiet it for a few weeks while the tendon keeps starving underneath. That's why the shot wore off and the pain came back worse. It isn't just age. It's a fuel shortage, and a shortage can be fed.

Doctors often call it arthritis, bursitis or "just age," but most of that pain starts in the tendon. Tendinopathy is the slow breakdown of tendon tissue, and it usually shows up before arthritis does.

Tendons wear a little every day. Your body repairs them, mostly while you sleep, and that repair runs on NAD+. Starving cells can't make collagen, can't clear damage, and can't close the tiny tears, so the tendon gets weaker and the ache keeps coming back.

That's also why an X-ray can come back "normal." An X-ray shows bone. It doesn't show a worn tendon, so the real problem gets missed.

CelluNAD+ works differently than cortisone, pain pills and collagen powders. It doesn't cover the ache. It gives your cells back the fuel they use to repair the tendon.

If you want to read the research yourself, here are some of the studies behind it:

  • Gluteal tendinopathy as the main source of outer hip pain in women after menopause, Grimaldi & Fearon, Journal of Orthopaedic & Sports Physical Therapy, 2015
  • NAD+ falls with age in human tissue, Massudi et al., PLoS One, 2012
  • Nicotinamide riboside at 300mg, Conze et al., Scientific Reports, 2019

Take two droppers (2 ml) under your tongue once a day. Shake the bottle, hold it under your tongue for 30 seconds, then swallow. First thing in the morning works best, and you can drink coffee or eat right after.

What matters is consistency. Tendon repair takes time, so steady daily use is what builds results.

Here's what most customers report:

  • Weeks 1 to 2: The first steps out of bed get easier.
  • Weeks 3 to 4: Walking without the ache following you into the night.
  • Months 2 to 3: Sleeping on your side again.
  • Ongoing: Your body makes less NAD+ over time, so keep taking it to keep the repair going.

Score the ache from 0 to 10 when you get out of bed. Most customers see the number move before they notice it any other way.

One note: If you are pregnant, nursing, on blood thinners, or managing a medical condition, check with your doctor first.

  • Made in the USA Manufactured in a GMP-certified facility in the United States.
  • Third-Party Tested Every batch tested by Eurofins, so an outside lab confirms the bottle has what the label says.
  • Clean Formula Non-GMO, no artificial sweeteners, raspberry flavor. Every dose printed on the label.
  • 90-Day Money-Back Guarantee Use every drop, then decide. If the ache hasn't changed, email us within 90 days for a full refund.

The Reason Your Feet Burn, Tingle and Go Numb Is Not What You Were Told

The nerves that reach your feet are the longest in your body, and they run on a fuel called NAD+. When that fuel runs low, they're the first to go hungry. Their protective coating wears thin and the signals start misfiring. It's called nerve starvation.

  • Burning at night
    "My feet are burning so bad I literally cant keep them under the blankets."

  • Numb, and it still hurts
    "How can something so numb hurt so bad?!"

  • Losing your balance
    "I'm tired of falling."

  • Told it's permanent
    "I've been told it's incurable, permanent and progressive."

Inside Your Nerve

Starving vs. refueled. The difference is everything.

Title

Why Your Nerves Run Out of Fuel (The Real Reason It Started in Your Toes)

Your nerves are the most energy-hungry cells in your body. They run on NAD+, the molecule that turns food into energy.

By 50 you have half as much. A modern diet and high blood sugar drain it even faster.

The longest nerves, the ones to your feet, starve first.

CelluNAD+ is nerve fuel.

Two droppers under your tongue give your body what it turns into NAD+, so your nerves get fed, not muted.

Feeds starving nerves

Protects the coating

Quieter nights

Steadier on your feet

Feed Your Nerves →

'Excellent' | 3,471 Trusted Reviews

From People Who've Tried Everything.

Reviews from women who tried CelluNAD+ after years of hip, knee and shoulder pain, and treatments that didn't work.

The Science Behind CelluNAD+

1

The Tendon Wears Thin

Every step, stair and night on your side puts tiny tears in your tendons. Your body repairs them while you sleep, and that repair runs on a fuel called NAD+. By your 50s you have about half of it, and it drops fastest when estrogen falls. The tears pile up faster than your cells can fix them.

2

The CelluNAD+ Refuel

CelluNAD+ puts 300mg of NR, liposomal delivery, and the B vitamins that switch it on into two droppers under your tongue. It skips your stomach and reaches your cells in minutes.

3

The Tendon Repairs

With the fuel back, your cells go back to their night shift: making collagen, clearing damage and closing the tiny tears. The tendon gets stronger instead of weaker.

4

You Move Freely Again

Your body already knows how to fix a tendon. It just ran out of the energy to do it. Most customers report less ache by week 2, walking without it by week 4, and sleeping on their side again by week 8.

1

The Tendon Wears Thin

Every step, stair and night on your side puts tiny tears in your tendons. Your body repairs them while you sleep, and that repair runs on a fuel called NAD+. By your 50s you have about half of it, and it drops fastest when estrogen falls. The tears pile up faster than your cells can fix them.

2

The CelluNAD+ Refuel

CelluNAD+ puts 300mg of NR, liposomal delivery, and the B vitamins that switch it on into two droppers under your tongue. It skips your stomach and reaches your cells in minutes.

3

The Tendon Repairs

With the fuel back, your cells go back to their night shift: making collagen, clearing damage and closing the tiny tears. The tendon gets stronger instead of weaker.

4

You Move Freely Again

Your body already knows how to fix a tendon. It just ran out of the energy to do it. Most customers report less ache by week 2, walking without it by week 4, and sleeping on their side again by week 8.

Your Transformation Timeline

What most customers report in their first 90 days.

Phase 1

WEEKS 1-2 | Refueling

Your cells start getting their fuel back. Most women notice the first steps out of bed get easier before anything else.

Phase 2

WEEKS 3-4 | Walking Again

This is when most women notice. You walk the dog, you do the stairs, and the ache doesn't follow you into the night.

Phase 3

MONTHS 2-3 | Back On Your Side

You sleep on your side again. The ache that used to wake you up at 3am is gone most nights.

Phase 4

MONTHS 4-6 | Moving Freely

You stop planning your day around your hips and knees. Your body makes less NAD+ with age, so keep taking it to keep the repair going.

Our Impact Statistics

4,647+

People Have Used CelluNAD+

Everyday women who were told it's just aging and wanted a real fix.

300mg

Clinical-Range Nicotinamide Riboside

The most direct precursor to NAD+, at a dose used in published human trials.

97%

Of Reviewers Rate It 4 or 5 Stars

From women who've lived with hip, knee and shoulder pain for years.

300mg NR dose: Conze et al., Sci Rep, 2019.

CelluNAD+ Cellular Refuel Formula

Every dose printed on the label, no proprietary blend. Made in a GMP-certified facility and third-party tested in the USA.

Doctor Recommended

Dr. Sanober Doctor, MD, ABAARM

Double-board certified in Family Medicine & a leading expert in Integrative and Anti-Aging Medicine with extensive research in cellular restoration therapies.

"CelluNAD+ addresses the root cause of menopausal aging: cellular energy depletion. It provides the cellular energy needed to soothe aching joints, restore mobility, and as a powerful downstream effect, repair skin and restore energy from within."

Latest Facebook Reviews

Common Questions

Everything you need to know about your tendons, results timelines, and what to expect

What does CelluNAD+ actually do for my tendons?

CelluNAD+ is a cellular fuel restoration formula. It gives your cells back the NAD+ they lost after 50 so they can go back to the jobs they stopped doing:

  • Producing collagen for tendons and ligaments
  • Clearing the micro-damage every step puts into a tendon
  • Keeping the repair going overnight so you wake up looser, not stiffer
  • Releasing the protective bracing your body builds around a sore joint
  • Working on every aching joint at once, not just one
How is CelluNAD+ different from collagen powders and joint pills?

Collagen powders and joint pills deliver building materials. CelluNAD+ gives your cells the energy to use them.

Two problems with the pills and powders you already tried:

  • Up to 90% is destroyed by stomach acid before it reaches a single cell
  • Even what arrives just sits there, because starving cells can’t turn it into tendon

CelluNAD+ is liposomal drops held under the tongue, so it skips the stomach. And it restores the fuel, so the repair work actually happens.

How long before I notice a difference?

Every body is different, but many women notice easier mornings and better sleep within the first 2 to 4 weeks.

Tendon repair takes time, so we recommend a full 90 days, every day, first thing in the morning. That is why the 90-day protocol is the one we recommend, and why the guarantee covers all 90 days.

Will CelluNAD+ work for me if I'm over 60?

Yes. CelluNAD+ was built for women 50+, including women in their 60s, 70s and beyond.

NAD+ keeps dropping with age, so the older you are the further your cells are from full fuel. Many of our happiest customers are women in the 55 to 75 range who had been told it was “just arthritis.”

What exactly is in CelluNAD+?

Every dose (2 ml) delivers clinical-range amounts, wrapped in liposomes:

  • Nicotinamide Riboside (NR) 300mg, the cellular fuel restorer
  • TA-65 astragalus extract 25mg, protects DNA during repair
  • CoQ10 50mg, restarts the cell’s power plants
  • Pterostilbene 50mg, antioxidant shield for repairing cells
  • TMG 50mg with vitamin B6, B12 and folate, switches the fuel on
  • Magnesium glycinate 50mg, muscle release and sleep support

Raspberry flavor, no artificial sweeteners, non-GMO, made in a GMP-certified facility and third-party tested by Eurofins in the USA.

Is CelluNAD+ non-GMO and free of artificial sweeteners?

Yes. CelluNAD+ is non-GMO and contains no artificial sweeteners. Every batch is third-party tested by Eurofins so an outside lab confirms the bottle has what the label says.

Can I take CelluNAD+ if I'm on medication, HRT, or blood thinners?

CelluNAD+ is drug-free and many women take it alongside HRT (HRT provides the signal, CelluNAD+ provides the fuel). As with anything new, please check with your healthcare provider first, especially if you are pregnant, nursing, on blood thinners, or managing a medical condition.

Is CelluNAD+ suitable for special diets? (vegetarian, halal, kosher)

CelluNAD+ contains no collagen, gelatin or animal-derived actives. Please check the full ingredient list on the label to confirm it fits your specific dietary needs (vegetarian, halal, kosher).

Does CelluNAD+ contain any allergens?

CelluNAD+ is free from milk, eggs, fish, shellfish, tree nuts, peanuts, wheat and sesame. The liposomes are made from lecithin, so please check the label if you have a soy or sunflower sensitivity.

Will CelluNAD+ cause any side effects?

CelluNAD+ uses clinical-range doses of ingredients studied in humans. Most women transition smoothly. A few notice a light flush or extra energy in the first days as NAD+ levels come back up, which settles quickly.

In the unlikely event you feel unwell, stop taking it and speak with your doctor. Let us know too; your safety comes first and your feedback helps us keep every batch right.

Reviews

Verified Customer Reviews

★★★★★  'Excellent' | 3,471 Trusted Reviews
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Powerful Natural Ingredients Behind GemFlex Collagen

Three key ingredients that support collagen production, skin hydration, and overall skin health.

Hydrolyzed Marine Collagen Peptides

Title
Title

Supports Skin Elasticity Naturally

Hydrolyzed marine collagen peptides are easier for the body to absorb and utilize effectively, helping support skin elasticity, joint flexibility, and stronger hair and nails with consistent daily use.

Vitamin C For Collagen Synthesis

Title
Title

Boosts Natural Collagen Production

Vitamin C plays an important role in supporting natural collagen production in the body while also helping protect skin cells and maintain a smoother and healthier skin appearance.

Hyaluronic Acid For Hydration

Title
Title

Helps Maintain Skin Moisture

Hyaluronic acid helps retain moisture within the skin and connective tissues, supporting better hydration levels and contributing to smoother, healthier looking skin over time.

Real Results from GemFlex Users

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@liamfitlife

@chloeskindaily

@sophiaselfcare

92%

Users noticed smoother, healthier looking skin

Many customers reported visible improvements in skin texture and hydration after adding GemFlex Collagen to their daily routine.

89%

Felt stronger hair and healthier nails

Consistent use helped support stronger hair growth and reduced nail breakage according to feedback from our customers.

90%

Reported better joint comfort and mobility

Users shared that daily collagen support helped reduce stiffness and made everyday movement feel easier and more comfortable.

94%

Would recommend GemFlex to friends 

Most customers said they would happily recommend GemFlex Collagen to others after experiencing noticeable results themselves.

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Real Stories From Women Using GemFlex

Inside Your Tendon

Starving vs. refueled. The difference is everything.

Where do you feel it?

Tap where it hurts.

  • Shoulder
  • Elbow
  • Hip
  • Knee
  • Foot

The sign

"Reaching overhead feels like your shoulder is ripping apart?"

What it is

Rotator cuff tendinopathy. Tiny tears your cells can't repair after menopause, so the tendon stiffens and scar tissue builds up.

The sign

"Pain in your elbow every time you grip, lift, or twist?"

What it is

Tennis elbow. Tiny tears in the forearm tendons that your cells no longer have the fuel to rebuild.

The sign

"Can't sleep on your side without your hip screaming?"

What it is

Gluteal tendinopathy. The tendon on the outside of your hip loses its nightly repair when cellular fuel drops, and lying on it is what wakes you up.

The sign

"Knees hurt when you bend or take the stairs?"

What it is

Patellar tendinopathy. The tendon from your kneecap to your shinbone is wearing faster than starving cells can repair it.

The sign

"First steps in the morning feel like walking on broken glass?"

What it is

9 times out of 10, it's plantar fasciitis, a tendinopathy of the foot. Overnight repair never finishes, so the first steps tear it open again.

Same cause everywhere: the cells that repair your tendons ran out of fuel.