When dealing with Chinese supplement, chemical, or drug suppliers, in my experience its been very important to verify / test everything, every time - and even then you should expect problems.
Iāve had situations where the sample they gave me (which I had lab tested) is different from the ultimate product they shipped (which I had lab tested again)ā¦ then they just stop responding to your emails and phone calls. Its not like you can call the Better Business Bureau and lodge a complaint. There are many conmen over there acting as middlemen and they know you have no legal recourse and can never get your money backā¦ and they donāt care what harm they might be doing to peopleā¦ its scary.
I believe that in the USA and Europe, etc. the legal systems help to deter the sociopaths in business. In China they donāt have a well-functioning legal system, especially with regard to exports of chemicals, drugs, supplements, etc., so the sociopaths have much more free reignā¦ the conmen / middlemen just shut down their businesses when they get caught for doing anything really serious and start another oneā¦
This report and video below really is a good example of this problemā¦ and these test results below are from end user products being sold on Amazon. I suspect that the the probability of a contaminated or inaccurately labeled raw material product being sold in china by a middleman is much higher.
In the worst case - as in the Chinese Infant Formula scandal - people are actually dying. But with many contaminated supplements the causality link wonāt be so clear. If you damage your kidneys from some contaminated supplement from China, how to you track it down and link it directly to one given product - its very hard. If you donāt have easy access to a good 3rd party chemical analysis lab that can test the purity and look for all the possible contaminants, I would avoid these products coming out of china.
Report on NMN supplement products: (this study only looked at the % NMN, not for any contaminants)
(and this doesnāt even touch the broader issue of whether NMN is at all effective in increasing healthspan or lifespan - as there is no good human data on that yet, and many opposing views).
Out of 22 NMN Brands tested:
- 14% had at the level, or above, level of claimed NMN
- 23% had between 89 and 99% of the claimed level of NMN
- 64% had NMN had under the method detection or reporting limit, or under 1% of claimed NMN
- 14% had no NMN
Summary:
DETAILS:
Quantitative Analysis of 22 NMN Brands - Lab Analysis / Quality Analysis
Video: 22 NMN Brands Independently Tested | SHOCKINGLY POOR RESULTS FOR MANY BRANDS