Longevity starts with science.
Formulas informed by longevity research.
The best longevity supplements ever developed.
Made in Germany with German raw materials. Third-party tested in Switzerland.
Rated 4.9 from 1,000+ reviews. 1.37M+ servings.
99.7% pure.Our NMN, independently lab-tested in Switzerland.
Five pharmaceutical-grade anti-aging supplements, each targeting a key reason of aging. Made in Germany. See the NMN lab report
The king of longevity
Premium NMN
Supports NAD+, the energy molecule in every cell.
Longevity genes
Premium Resveratrol
Studied for SIRT1, the so-called youth gene.
Cell renewal
Premium Spermidine
Supports natural weight control and cell renewal.
Senescent cells
Premium Fisetin
Researched for its effect on senescent, aging cells.
Two-formula system
Premium Hair Complex
For hair shedding, breakage, and thinning.
Your next chapter
Consider anti-aging supplements if you…
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Are over 40
Want to feel youthful and energetic.
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Want lasting energy
Feel strong through the day and into the evening.
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Prefer natural weight support
Make healthy weight control part of your routine.
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Think long term
Want to stay healthy and active as you age.
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Value cell renewal
Care about healthy cells and a revitalized appearance.
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Want more vitality
Make everyday strength and a healthy libido a priority.
Why choose MASI?
Made in Germany.
Manufactured to strict quality standards.
See how it is made
Tested in Switzerland.
Independent checks. Results you can see.
See how it is tested
Made in Germany
At MASI, we pride ourselves on offering the purest and highest quality products to support your health and longevity journey. Our supplements are manufactured to a standard not yet seen in the industry, setting a new benchmark for product quality. The MASI benchmark.
Ordering supplements online can be a daunting task. The longevity market is flooded with untraceable products produced from unknown laboratories in Asia with subpar regulatory and quality standards. When it comes to your health and longevity, we believe quality comes first.
MASI supplements are produced in a leading manufacturing facility in Germany to the strictest German standards. Equally important is that all the products are made from the top quality raw material sourced only from certified and prominent raw material providers in Germany and also France, Italy and Netherlands. Vegan suitability varies by product. Premium Hair Complex contains marine collagen and is not suitable for vegans. Check each product page for ingredient and allergen information.
Tested in Switzerland
Following production at our state-of-the-art German facility, MASI supplements are independently tested at a leading laboratory in Switzerland for an unbiased evaluation of the product quality.
Each batch of production is tested for purity (temporarily not Fisetin), microbiology, and heavy metals, with the independent test results accessible to all customers through a QR code provided with the product and on our website.
We take quality control seriously as we want you to be sure of what exactly you swallow when taking MASI products.
The people behind MASI
Meet the MASI medical board.
Expertise in longevity, medicine and nutrition.
Nathan K. LeBrasseur
PT, PhD
Mayo Clinic
Read profile
- Professor, Mayo Clinic, Department of Physical Medicine & Rehabilitation
- Director, Robert & Arlene Kogod Center on Aging
- Co-Director, Paul F. Glenn Center for Biology of Aging Research
- Scientific Director, Office of Translation to Practice
- Mayo Clinic
Stefanos N. Kales
MD, MPH, FACP, FACOEM
Harvard Medical School
Read profile
- Professor of Medicine, Harvard Medical School
- Professor & Director, Occupational Medicine Residency,
- Harvard TH Chan School of Public Health
- Division Chief, OEM, Cambridge Health Alliance
Wolfgang Bucke
PhD, Pharmacist
Nutrition & phytotherapy
Read profile
- Proven Expert on nutritional supplements and anti-aging medicine
- Scientific work on liposomes
- Key-note speaker on modern Phytotherapy
Scientific inspiration
Scientifically backed formulas
Inspired by leading experts and clinics.
Explore the scienceCellular energy
NAD+ and cellular function
Cell renewal
Autophagy and cellular maintenance
Healthy aging
Senescence and longevity
Researchers whose work inspires MASI
Professor Yoshinori Ohsumi
Tokyo Institute of Technology, Nobel Laureate in Physiology or Medicine 2016
Professor Martin Karplus
Harvard University, Nobel Laureate in Chemistry 2013
Dr. Sir Richard Roberts
New England Biolabs, Nobel Laureate in Physiology or Medicine 1993
Professor Thomas Südhof
Stanford University, Nobel Laureate in Physiology or Medicine 2013
Professor Jack Szostak
University of Chicago, Nobel Laureate in Physiology or Medicine 2009
Professor Ana Maria Cuervo
Einstein College of Medicine
Dr. Jim Kirkland
Mayo Clinic
Professor Meir Stampfer
Harvard T.H. Chan School of Public Health
Prof. Dr. Christoph M. Bamberger
Specialist in Prevention / Diagnostics
Prof. Dr. Michael Bauer
University Hospital Jena, Clinic of Anaesthesiology and Intensive Care Medicine
Professor Joe Baur
University of Pennsylvania School of Medicine
Effective dosage
At MASI, we believe the optimal dose is critical for maximising your wellbeing.
NMN: lab-verified 99.7% purity
NMN
1000mg
per serving
Resveratrol
500mg
per serving
Spermidine
3mg
per serving
Fisetin
500mg
per serving
Hair Complex
2bottles
Two-part formula
Daily capsule guidance
For NMN, Resveratrol, Spermidine and Fisetin.
Follow the directions on each product label.
- 40–50 years
- 1 capsule per day
- 50 years and over
- 2 capsules per day
Why dosage and absorption matter
This is why we provide potent yet secure dosages of the finest quality ingredients, maximizing the benefits you receive from each NMN, Resveratrol, Fisetin and Spermidine supplements daily.
A common issue with most anti-aging supplements is their poor absorption and bioavailability, which means that low oral doses might be ineffective.
MASI longevity supplements leverages cutting-edge scientific insights to inform the dosage guidelines of our products, ensuring they are both safe and potent enough to exceed the necessary absorption and bioavailability rates for tangible health benefits.
Unlike many vitality supplement competitors who offer lower-priced products with doses much smaller than those found in MASI products, our approach prevents the risk of suboptimal intracellular concentrations that offer no real advantage. Our goal stands with lifespan extension. Why compromise on your health?
Which supplement is right for me?
Start with your goal. Each product page shows its benefits, ingredients, daily serving, and supporting studies.
Explore all supplementsAre all products vegan?
Ingredients and dietary suitability vary by product. Hair Complex contains marine collagen and is not vegan. Read each product page for ingredients and allergens.
How do subscriptions and cancellation work?
The 30-day supply is billed every 28 days (4 weeks). A one-time purchase is also available.
Cancel anytime by emailing support@masi.eu.
If you cancel before your second successful charge, an Early Cancellation Amount applies. It covers subscription discounts, welcome gifts, and other checkout discounts on your initial subscription order only.
After your second successful charge, cancellation is free.
How can I get help with my order?
Include your order number so the team can help with delivery or subscription changes.
support@masi.eu