Most supplements aren't what the label says

  • NUS tested 18 NMN products sold in Singapore. Over 80% were not what they claimed.

    In 2024, researchers at NUS Yong Loo Lin School of Medicine and Temasek Polytechnic bought 18 NMN supplements on the Singapore market and measured what was actually in them. More than 80% contained less NMN than the label claimed. Three contained no detectable NMN at all.

    What that means for you: in this category, price tells you nothing about whether the product is real. An independent lab result is the only thing that does.

  • US researchers tested 25 melatonin gummies sold for sleep. Nearly 9 in 10 were not what they claimed.

    In 2023, researchers from Harvard Medical School and the University of Mississippi bought 25 melatonin gummy products on the US market and measured what was actually in them. 22 of the 25 were labelled inaccurately, with melatonin ranging from 74% to 347% of the stated dose. Only 3 came within 10% of the label. One contained no melatonin at all, just CBD.

    What that means for you: the dose on the label is a promise, not a measurement. You could be taking a fraction of what you paid for, or more than three times it. An independent lab result is the only way to know.

NUS tested 18 NMN products sold in Singapore. Over 80% were not what they claimed.

In 2024, researchers at NUS Yong Loo Lin School of Medicine and Temasek Polytechnic bought 18 NMN supplements on the Singapore market and measured what was actually in them. More than 80% contained less NMN than the label claimed. Three contained no detectable NMN at all.

What that means for you: in this category, price tells you nothing about whether the product is real. An independent lab result is the only thing that does.

US researchers tested 25 melatonin gummies sold for sleep. Nearly 9 in 10 were not what they claimed.

In 2023, researchers from Harvard Medical School and the University of Mississippi bought 25 melatonin gummy products on the US market and measured what was actually in them. 22 of the 25 were labelled inaccurately, with melatonin ranging from 74% to 347% of the stated dose. Only 3 came within 10% of the label. One contained no melatonin at all, just CBD.

What that means for you: the dose on the label is a promise, not a measurement. You could be taking a fraction of what you paid for, or more than three times it. An independent lab result is the only way to know.

What we test and how often

Microbial & heavy metals

Every single batch we manufacture is tested by Eurofins Singapore for microbial safety and heavy metals before it is released for sale.

Laboratory: Eurofins Singapore

Raw material purity

Every lot of raw material is tested before it enters production. Our NMN returns greater than 99.99% β-NMN content.

Laboratory: SGS

Finished product content verification

Eurofins measures the actual NMN content in the finished capsule and confirms it delivers the stated 500mg per serving. This is the test almost nobody in the category runs, because it is expensive and because it is where underdosed products get caught.

Laboratory: Eurofins Singapore

Affordable, because there is nobody between us and you

  • The usual chain

    Manufacturer, then brand owner, then distributor, then retailer, then you. Retailers typically take 40 to 50%. Distributors take another 20 to 30%. Every layer is priced into the bottle before it reaches you.

  • Here at Estalife

    We manufacture it and we sell it. There is no brand owner paying us a manufacturing fee and no retailer adding margin on top.

  • What we did not cut

    Same raw material grade, same NSF GMP certified facility, same Eurofins and SGS testing, same processes and machines used for the hospitals and global brands we manufacture for.

Singapore's largest NSF GMP-certified supplements factory

Our Ang Mo Kio facility manufactures for hospitals and global brands, and now for Estalife directly — no middlemen. You're welcome to see it for yourself.


Pair it with

Plant Glucosamine + Chondroitin + MSM: A complete joint stack for cartilage and comfort.

Omega-3 Fish Oil: Adds inflammation support, and the fats help absorb ProJoint's turmeric.

Calcium Glycinate: Strong bones give your joints a solid foundation.

Vitamin D3 K2 MK-7: Helps calcium reach your bones for bone and joint health.

Frequently asked questions

The new ProJoint is manufactured in Estalife's own NSF GMP-certified factory in Ang Mo Kio, Singapore — the same facility that produces for hospitals, clinics, and international brands. The move to Singapore manufacturing brings the product under our direct quality control, which is a meaningful upgrade. "Made in Japan" is not inherently higher quality than made in our own certified Singapore factory.

Vitamin D was removed because 600 IU is a relatively modest dose and joint health is not the primary mechanism Vitamin D supports. For proper Vitamin D supplementation, Estalife's dedicated Vitamin D3 + K2 MK-7 provides 1,000 IU alongside K2 MK-7 for calcium direction — a more complete and correctly dosed approach.

The formula was rebuilt around the four ingredients with the strongest published human trial evidence specifically for joint outcomes. Customers who want omega-3 support for inflammation can pair ProJoint with Estalife Omega-3 Fish Oil 300s, which provides a much more meaningful EPA/DHA dose than the oil blend in the old formula.

The capsule is a veggie capsule. However, Undenatured Type II Collagen is derived from chicken sternum — this product is not vegan or vegetarian. Customers looking for a plant-based joint supplement should consider Estalife Premium Plant Glucosamine instead.

supplement labels supplement labels

Think you can trust supplement labels? Think again.

A supplement label tells you what a brand says is inside. It can’t tell you whether that’s true.

In many markets, including Singapore, supplements aren’t independently checked against their labels before they’re sold. That’s why, when scientists test supplements against their labels, they keep finding products with far less, far more, or none of what’s claimed.

  • 5 stars: 4 (44%)
  • 4 stars: 3 (33%)
  • 3 stars: 2 (22%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
M
Marina Nasser

Good. Reduces the pain that I have on my joints and knees.

L
Lee Mee Fan

v good and effective

M
MunSeng Lee

Mum knee joint still painful after taking Projoint for a month. Will try for another month to see any positive effect.

A
Anonymous

👍🏻👍🏻

C
Celine Zaman

Love this product. Have been seeing great results.

L
Lay Peng

Currently on the first bottle,I can feel it getting better slightly. Now that I've bought the second bottle, I have a question, did the tablets changed their looks? It looks different from the first bottle I've taken.

A
Anonymous

Fast delivery. 1st bottle, yet to feel the effect.

A
Anonymous

Haven’t feel anything yet-

J
Jonathan Ooi Kee Chuan

Good

RESEARCH SOURCES & CITATIONS

All claims on this page are supported by published human clinical research. Only human RCTs and meta-analyses of human RCTs are cited. No animal or in vitro studies are referenced as evidence for product claims.