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folaat 5 mthf 400 mcgFoliumzuur (ook wel vitamine B11 genoemd of vitamine B9 in Duitsland en de VS) komt in voeding voor als verschillende vormen van folaat, waaronder de biologisch meest actieve vorm 5 methyltetrahydrofolaat (5 MTHF). Dit is de lichaamseigen vorm waarin folaat in het bloed circuleert. Foliumzuur is de benaming voor het synthetische pteroylmonoglutaminezuur, dat in de meeste foliumzuursupplementen als bron van folaat wordt gebruikt. De verbinding
Foliumzuur (ook wel vitamine B11 genoemd of vitamine B9 in Duitsland en de VS) komt in voeding voor als verschillende vormen van folaat, waaronder de biologisch meest actieve vorm 5-methyltetrahydrofolaat (5-MTHF). Dit is de lichaamseigen vorm waarin folaat in het bloed circuleert. Foliumzuur is de benaming voor het synthetische pteroylmonoglutaminezuur, dat in de meeste foliumzuursupplementen als bron van folaat wordt gebruikt. De verbinding pteroylmonoglutaminezuur is de meest geoxideerde vorm van folaat, en komt in die hoedanigheid niet tot nauwelijks voor in de voeding. Het probleem met foliumzuur is dat bij een relatief grote groep mensen de omzetting in het biologisch actieve 5-MTHF moeizaam verloopt, waardoor suppletie mogelijk onvoldoende effect zal sorteren en er bovendien een onwenselijke stapeling van niet-gemetaboliseerd foliumzuur kan ontstaan. Om deze redenen maakt Vitals uitsluitend gebruik van Quatrefolic®, dat bestaat uit 5-MTHF gebonden aan glucosaminezout. Let op:Gebruik Folaat 5-MTHF voor een optimale werkzaamheid met een vitamine B-complex en/of een multi (vanwege synergie tussen B-vitaminen). Het is hierbij van belang om bij langdurig gebruik (> 3 maanden) de totale dagelijkse inname van folaat niet hoger te laten zijn dan 1000 mcg. Dit product is een voedingssupplement (Vitaminepreparaat). Hou je aan de aanbevolen dosering. Een gevarieerde, evenwichtige voeding en een gezonde levensstijl zijn belangrijk. Een voedingssupplement is geen vervanging van een gevarieerde voeding. Buiten bereik van jonge kinderen houden. Droog, afgesloten en bij kamertemperatuur bewaren, tenzij anders geadviseerd op het etiket. Raadpleeg een arts, apotheker of therapeut alvorens supplementen te gebruiken in geval van zwangerschap, lactatie, medicijngebruik en ziekte.Shipping Notes
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4.4 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Fantastic Read
Format: Hardcover
Fantastic book. Another Incredible work by Lee Smith!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
★★★★★ 5
A great book by a great journalist
Format: Hardcover
The China Matrix is another great book by the great journalist Lee Smith. The book is written in a very easy to read format. I have learned so many things that I didn't know before, and I simply can't put it down. Lee opened my eyes about the way Washington D.C. works, and I really miss his Epoch TV show, Over the Target. I wish more shows invited him on because he has a great insight when it comes to domestic and international affairs. To whoever wants to learn more about the way the Chinese Community Party works, I recommend to get this book and read it.
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Reviewed in the United States on November 1, 2025
★★★★★ 3
Misses some important context, but a solid book
Format: Audiobook
I can't give it the 3.5 stars it deserves. Smith is an outstanding writer and has long view China as an adversary that we intentionally do not pay attention to given the elites make large amounts of money working with the CCP. In this book he demonstrates that happened from the get go, starting with Kissinger. Rarely, if ever, were American interests ever viewed as the lens with which to see China, only as a way to make money for power brokers and businesses alike. He points to Trumps long standing opposition to the way the international trade system evolved and the way it harmed middle class Americans.
All of this is outstanding, but the book loses many points trying to cover for terrible protectionist economic policies. We certainly may have gone too far in hollowing out the industrial base, but 100% of Americans benefitted from lower price and more selections. It is not the purpose of the book, but a look at overall US business policy has been to harm Amercians, one need look no further than mass immigration, legal and illegal that drive down wages at the lower/middle end. Nor does the book bother with looking at general business mindless following each other for yet another new fad, from six sigma to who moved my cheese. Again, not what the book is about, but he tries to make the claim that all of this is China and elite policy driving toward this outcome when that data is not supported.
Overall, it is a better than worse book that one should read if for no other reason than to see how far we have actually bent over for China for gains that are mostly illusory for business access. That China still uses the elites to gain access not just to markets but US citizen minds is the real problem. Smith does a good job pointing that out
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Reviewed in the United States on October 25, 2025
★★★★★ 5
Yet, so many US consumers take a knee to Chinese imports.
Format: Kindle
My first response to Lee Smith's "The Chinese Matrix" is anger with the CCP. But, they did what treasonous US politicians and investors permitted in exchange for wealth and power. The current situation reminds me of the Chinese finger trap - a small tube of woven reeds just large enough to insert a finger into each end. When naturally trying to withdraw the fingers from opposite ends, the woven reeds constricted. Escape was contrary to natural instinct. Likewise, to extract our country from the Chinese Matrix will require unnatural sacrifice.
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Reviewed in the United States on March 11, 2026
★★★★★ 5
Comprehensive and bold analysis of US foreign policy with China.
Format: Kindle
Lee Smith takes the reader through the many years of China appeasement from Kissenger and Nixon to the present where China continues to suck the power of the US toward its goal of global domination.
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Reviewed in the United States on December 9, 2025
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