I had severe B12 deficiency for many years and no prescription medication worked (in Norway it is normal to give B12 in the form of cyanocobalamin). I was advised to try methylcobalamin in higher dose than you can buy in Norway. I ordered my first box on iherb, and now I have taken this type for three years. Results off bloodwork are better than ever(I'm stable on 700-800 nmol/L). Recommend this highly! Tastes good too :) You can't overdose B vitamins since they are water soluble , the body absorbs what it needs and the excess is excreted through the urine. I recommend that you take a good B complex when you start supplementing with B12 and / or folate . This because supplementing only with B12 / folate may camouflage the lack of other B vitamins. When you have low values / lack of B12 / Folate, you will also likely have low levels of other B vitamins. Visit my iherb page to find a recommendation for a good B complex and several other recommendations and reviews. Was this review helpfull to you? Pleace press "Yes" below :) NORSK: Jeg har lidt av alvorlig B12 mangel i en årrekke og behandling med reseptbelagte tilskudd/injeksjoner har ikke virket/hatt minimal effekt. Jeg begynte og lese meg opp på dette med vitaminer og mineraler og ble gjort oppmerksom på at man kun får kjøpt B12 i form av cyanokobalamin (syntetisk B12/kjemisk fremstilt) i Norge, unntaket er muligheten for injeksjon i form av hydroksokobalamin som har noe bedre opptak. Jeg ble anbefalt av en privat lege med god kompetanse på feltet å forsøke tilskudd i form av høydose methylcobalamin. Methylcobalamin er den naturlige formen for B12 og den har høy biotilgjengelighet/godt opptak. Jeg har nå benyttet denne formen i 3 år og har stabile B12 verdier på 700-800 nmol/L. B vitaminer kan ikke overdoseres ettersom de er vannløselige, kroppen tar opp det den trenger og overskuddet skilles ut gjennom urinen. Jeg anbefaler at du tar et godt B kompleks i "bunn" når du begynner med tilskudd av B12 og/eller folat. Dette ettersom å supplere kun men B12/folat vil kunne kamuflere mangel av andre B vitaminer. Når du har lave verdier/mangel på B12/Folat vil du også sannsynligvis ha lave verdier av andre B vitaminer. Besøk min iHerb side for anbefaling av et godt B kompleks og flere andre anbefalinger og reviews :) Fant du denne tilbakemeldingen hjelpsom? Trykk "Yes" under :)
Posted by Blue-Sky on January 1 2013 | Verified Purchase
Jarrow has changed the formula and it doesn't work so well any more.
Posted by kanaca on August 3 2012 | Verified Purchase
I really like Jarrow products, typically. But this made no difference, when cheaper formulas did. I read other reviews. Since July, other customers have remarked the formula (and bottle) have changed.
Posted by iHerb Customer on February 16 2009 | Verified Purchase
The Methyl B12 I have used in the past was small, cherry flavored, and didn't contain xylitol. This stuff, not so much - it's huge pills/logenzes, lemon-flavored, and has xylitol. I won't be buying it again. On the good side, I lucked out to have ordered powdered L-Lysine (in the jumbo can!) during one of your buy one/get one free sales the last time, and was totally delighted with it. Reordered, and missed the sale, but it's still a great product. One out of two's okay, I guess....
Posted by iHerb Customer on June 26 2015 | Verified Purchase
This Product was no use to me as it gave me a Severe reaction upon taking it, which included severe sleepy/drowsiness, mental blanking and dizziness, perhaps i could not tolerate it due to the Methyl and i will be purchasing the Hydroxocobalamin next to see if that does any better. Despite that the Shipping from iHerb was great though, Thank you.
Posted by iHerb Customer on April 10 2017 | Verified Purchase
It contains Xylitol which really irritates the bladder. Be cautious about this product!!!
Posted by runsiman on December 10 2016 | Verified Purchase
I did not check the expiry date and stored the good in the cabin for about 2 months after receiving it. When I used it, I found that the expiry date is 10/13 !!!! It is unbelievable!!! How come iHerb gave me a expired good?!! I wrote to Jarrow to check the expiry date, but no reply from them. Lot no. 56799J16.
Posted by iHerb Customer on December 2 2016 | Verified Purchase
it's been more than a month and i'm still waiting for it!
Posted by iHerb Customer on November 21 2014 | Verified Purchase
almos one month and the product ordered has not arrived yet.
Posted by iHerb Customer on September 24 2010 | Verified Purchase
Posted by iHerb Customer on February 17 2018 | Verified Purchase
Contains silicon dioxide which are nanoparticles.
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