MASI Longevity Science Reviews 57

TrustScore 4 uit 5

4,2

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Lees wat reviewers zeggen

Beoordeeld met 1 van de 5 sterren

I would give zero. I had bought the gift for my wife expecting her to enjoy as it was already second by without any visibal effet, but believing that maybe after some tim ether will be some positive e... Toon meer

Beoordeeld met 5 van de 5 sterren

It is my recommendation that anybody over 40 years of age starts supplementing with NMN, it has been proven to boost the NAD molecule which is responsible for all energy production in our body. This i... Toon meer

Beoordeeld met 5 van de 5 sterren

I never write reviews, but these products are worth one. I ordered the nmn + Spermidine combo without expecting anything crazy, let me tell you how wrong I was. My skin, visibly smoother, my energy le... Toon meer

Beoordeeld met 5 van de 5 sterren

I had a very good experience because the product arrive on time and it was easy to order. I am a 75 year old woman and I don't have any specific obvious improvements that I can convey, but I don't fee... Toon meer

Bedrijfsgegevens

  1. Vitamine- en supplementenwinkel
  2. Gezondheids- en schoonheidsartikelen winkel

Geschreven door het bedrijf

Trusted by over 352,000 longevity enthusiasts – MASI offers German-made, Swiss-tested NMN, Resveratrol, Spermidine, and Fisetin crafted to the highest anti-aging standards. Every supplement is produced in a state-of-the-art facility in Germany using raw materials sourced exclusively from top-tier German suppliers – never from China or India. Each batch is independently tested in Switzerland to ensure exceptional purity, safety, and potency.

The MASI Guarantee

German-made, Swiss-tested supplements crafted to the highest European standards.

We use only premium European-sourced ingredients – never from China or India. Every product is vegan, non-GMO, and free from fillers, allergens, gluten, and lactose. Pharma-grade quality. No shortcuts.

Contactgegevens

4,2

Goed

TrustScore 4 uit 5

57 reviews

5 sterren
4 sterren
3 sterren
2 sterren
1 ster

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Beoordeeld met 5 van de 5 sterren

Fantastic!!!

Fantastic!!!! I feel alive again, nmn has changed my life. Been on MASI nmn for the past 3 months, I've been struggling with anxiety for over 10 years and this supplement is the best thing I've ever added to my routine. It took about a month to TRULY kick in but once it did my I was finally able to sustain conversations without rising anxiety regularly! Love everything about this brand!!!

5 januari 2026
Review zonder uitnodiging
Beoordeeld met 5 van de 5 sterren

Wow!

Wow! Absolutely amazing Spermidine from MASI EU is top quality. I've taken it now for a month, the supplement overdelivered above my expectations, I was not expecting skin smoothness so fast! I first bought it after watching a clip online about spermidine cleaning your cells and now I can see the effects.

27 februari 2026
Review zonder uitnodiging
Beoordeeld met 1 van de 5 sterren

I would give zero

I would give zero. I had bought the gift for my wife expecting her to enjoy as it was already second by without any visibal effet, but believing that maybe after some tim ether will be some positive effect. When she opened the box, carton inside was crubled, as if someone had already opened the box before her. After few days of trying to use it she told me taht I feeel very bad like usežing someone had used it already. I have photos beu I do not have time tio waste, I was planning to buy for her more things from Masi, but after this experience it's absolutelly disappointing

19 december 2025
Beoordeeld met 5 van de 5 sterren

A real Supplement

It is my recommendation that anybody over 40 years of age starts supplementing with NMN, it has been proven to boost the NAD molecule which is responsible for all energy production in our body. This is something that naturally declines with age so supplementing with its pre cursor which is NMN works to lower your biological age in return. You can still get younger as you get older and that's fascinating. Great efforts from MASI brand, highest quality I've tested.

6 maart 2026
Review zonder uitnodiging
Beoordeeld met 5 van de 5 sterren

Best NMN on the market

Its great. I've been taking NMN for multiple years, with many different suppliers and MASI has been my go-to for the past 6 months. The dosages are high but most important are the batch results, with so much fake NMN it's hard to know exactly what you're getting, this brand eliminates that. Hands down the best NMN on the market!

2 maart 2026
Review zonder uitnodiging
Beoordeeld met 5 van de 5 sterren

I love NMN

I love NMN, been taking it for 3 months now and its been amazing! The energy I get is truly caffeine level, but it's different. Rather than a bump its an equal line of energy throughout the day that feels more natural. I'm a complete fan, it eliminated my brain fog, balanced out my day routine due to more energy, and the packaging makes it all feel premium. An incredible supplement for anyone feeling the energy related effects of aging.

28 februari 2026
Review zonder uitnodiging
Beoordeeld met 2 van de 5 sterren

Inefficient logistics and excessive packaging production – lack of response to reported issues

Unfortunately, I'm not receiving any replies to my messages. The packaging is indeed very nice, with the same number of layers as expensive creams. I think this is completely unnecessary for tablets and generates a lot of waste. I wrote to ask if they have an alternative option for those who don't want to produce unnecessary waste, but no one responded. The same thing happened with orders. I placed two orders and they were being shipped simultaneously. I sent an inquiry about combining orders, but I didn't receive a response. Besides, my first order was delayed by almost two months. Only reporting this and threatening to cancel the order had any effect.

1 december 2025
Beoordeeld met 5 van de 5 sterren

I love these supplements

I love these supplements. I've only taken them 4 months, but I've not missed a day. My hair feels healthier and the supplements are easy to digest. So very good quality. I'm looking forward to more length on my hair and will continue to take them.

19 november 2025
Beoordeeld met 5 van de 5 sterren

Clearer Skin!!!

I am taking fisetin 2 capsules 500mg everyday and I can see visibly clearer skin. Love the product!

20 februari 2026
Review zonder uitnodiging
Beoordeeld met 5 van de 5 sterren

First time I bought MASI was when I…

First time I bought MASI was when I became aware that supplement companies underdose or include toxins in their products. I decided to invest in my health by buying NMN and resveratrol with clear third party testing with results i can see. And I feel them a dramatic increase in my deep sleep and I feel more alive for sure. very impressed

18 februari 2026
Review zonder uitnodiging
Beoordeeld met 5 van de 5 sterren

Product of the YEAR

The nmn from MASI has to be the product of the year! Saw it online and immediately felt like it was for me, started the cycle and strongly felt the effects. Energy, mental fog gone, mornings are less painful and the focus is everlasting. I feel younger. 100%

12 februari 2026
Review zonder uitnodiging
Beoordeeld met 5 van de 5 sterren

Earned a subscription

A lot of brands, to the unsuspecting eye, skimp out on dosages failing to deliver the intended effect, to offset that you need to take more pills. Masi is very easy to take and already comes pre equipped with highest available dosages, I'm amazed by the effect and quality control available to me any time I want to double check. Good brand & good quality, earned a subscription.

30 januari 2026
Review zonder uitnodiging
Beoordeeld met 5 van de 5 sterren

The supplement of NMN is amazing

The supplement of NMN is amazing. I have been taking MASI for more than a year now and the energy is unmatched compared to all others. I used to take Lions mane, l theanine and other praised supplements but none of them have come close to this one for the benefits, especially in my age. I pair it with lower doses of caffeine and now I accomplish more in a day than 10 years ago. Huge believer in supplement and this is a brand i feel safe taking

24 januari 2026
Review zonder uitnodiging

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