NMN
Our NMN 1200 is a 99.5% highly-purified form of Nicotinamide Mononucleotide, a super nucleotide that has powerful health benefits, and supports healthy aging and longevity.
Cellular Vitality
Cognitive Performance
Metabolic Wellness
Healthy Aging
How to use
Take 2 capsules daily with a meal and a full glass of water for best results.
Our Guarantee
30-day money-back guarantee.
If you're not satisfied, just let us know. We’ll refund your order in full — no questions asked.
HOLLEEN is available at authorized drugstores as well as on the official HOLLEEN website. We recommend avoiding purchases from unverified platforms to ensure product authenticity and safety.
Holleen partners with Light Labs, an independent testing laboratory, to verify the safety and integrity of its products.
UNDERSTANDING THE RESULTS
Not detected means the substance is below detectable levels according to independent third-party laboratory testing.
LEV SPIVAK-BIRNDORF
LAB DIRECTOR
ISO 17025
Accredited laboratory
Results reflect laboratory analysis of submitted samples at the time of testing as reported by the testing laboratory. Results do not guarantee future performance, stability or shelf life. Product labeling and regulatory compliance remain the responsibility of the brand.
VEGAN
NON-GMO
GMP CERTIFIED
Why Our NMN Works Better
NMN 1200 delivers 1200 MG of ≥99.5% pure NMN per serving — one of the highest concentrations available, verified for potency and purity.
Energy & Focus
Helps maintain steady energy and mental clarity throughout the day
Metabolic Health
Supports efficient cellular metabolism and energy production
Healthy Aging
Promotes long-term cellular health and resilience
Cellular Vitality
Supports the cellular energy processes your body relies on
"NAD+ gave me a clear mental boost without the crash. I feel more productive and focused throughout the day."
We surveyed daily users, here are the results:
91% experienced sustained energy and greater daily vitality.
90% felt sharper, more focused, and mentally clear throughout the day.
92% said they felt better supported in their healthy aging journey.
94% reported greater overall vitality and resilience.
What Makes Holleen Special.
Every batch is third-party lab verified from raw material to finished product — testing for purity, potency, heavy metals, and microbes, confirming active-ingredient levels, and ensuring precise capsule fill weight.
| Features |
|
Other Brands |
|---|---|---|
| 1,200 MG Pure | ||
| ≥99.5% Pure | ||
| No Side Effects | ||
| Third-Party Tested for Purity | ||
| Clinically Dosed | ||
| No Additives & Fillers |
FAQs
You got questions. We got answers.
When and how do I use it?
Take 2 capsules daily as a dietary supplement or as recommended by your healthcare professional. Consistent daily use for at least 30 days yields the best results, as NAD⁺ levels build gradually over time.
What to Expect With Consistent Use
Day 1
Cellular Support Begins
NMN starts converting into NAD⁺, supporting your body's natural energy production and cellular function.*
Day 7
NAD+ Levels Begin to Rise
In a published human study, 250 MG/day NMN increased NAD⁺ metabolites by up to 38% within one week (Yoshino et al., 2021).* helping support cellular energy and supporting healthy energy levels.*
Day 14
Promotes Metabolic Function
As NAD+ levels stabilize, you may notice improved metabolic efficiency. Your cells are better equipped to convert nutrients into energy, supporting overall cellular health and vitality.*
Day 30
Supports Cellular Health and Wellness
Consistent NMN support helps maintain cognitive function and overall well-being. Many users report feeling more mentally sharp and physically resilient by the one-month mark.*
Day 45
Enhances Daily Energy & Focus
With sustained NAD⁺ support, cellular function is better maintained. You may notice improved stamina throughout the day and steadier energy levels.*
Day 60
Supports Long-Term Cellular Resilience
Two months of consistent use allows sirtuin pathways and cellular maintenance pathways to operate more efficiently, supporting healthy aging from the inside out.
Day 75
Supports Sustained Cognitive Function
Continued NAD+ support helps maintain mental clarity and focus over time. Your brain's energy systems benefit from stable NAD+ levels, promoting cognitive wellness through consistent use.*
Day 90
Supports Cellular Performance Over Time
Consistent daily use may help support long-term cellular energy support. Consistent use promotes ongoing vitality, metabolic health, and resilience as part of your wellness routine.*
How is holleen NMN 1200 different from other brands?
Holleen delivers 1,200 MG of ≥99.5% pure NMN per serving—one of the highest concentrations available. Most brands offer only 250-500 MG at lower purity grades. Every batch is third-party lab tested and independently verified, with published COAs available. You get pharmaceutical-grade potency at a fraction of the cost per mg compared to leading brands.
How long until I notice results?
Clinical research shows NAD⁺ metabolites can increase by 38% within one week of NMN supplementation (Yoshino et al., Science, 2021). Many users report improved energy and mental clarity within 2–4 weeks. For optimal cellular support and long-term benefits, consistent use for 60–90 days at least is recommended.
Is this safe to take with other supplements or medications?
NMN is generally well-tolerated. However, if you're taking prescription medications or have a medical condition, consult your healthcare provider before use.
Why do NAD⁺ levels decline with age?
NAD⁺ naturally decreases by approximately 50% between your 30s and 50s due to aging, stress, and lifestyle factors (Yoshino et al., 2018; Massudi et al., 2012). Lower NAD⁺ levels are linked to reduced cellular energy, slower metabolism, and decreased cognitive function. NMN supplementation helps restore what time depletes.
What's NMN 1200 made of?
Holleen NMN 1,200 contains 1,200 MG of ≥99.5% pure β-Nicotinamide Mononucleotide per serving in vegetable capsules. No fillers, no proprietary blends, just pharmaceutical-grade NMN at clinically relevant doses.
How does NMN compare to direct NAD⁺ supplements?
NMN is a direct precursor that your body converts into NAD⁺ through natural cellular pathways. The high 1200mg dose ensures sustained NAD⁺ support throughout the day, while the ≥99.5% purity guarantees maximum bioavailability.
What if it doesn't work for me?
NMN works at the cellular level, so changes can be subtle at first. Some users notice energy improvements within days, while others see gradual benefits over weeks. If you're not satisfied, we offer a 30-day money-back guarantee—we stand behind our product quality.