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 iHerb Customer on February 1 2010 | Verified Purchase
Methyl is the most usable form of B12 and this product delivers it as a lozenge, so it doesn't get destroyed in the digestive system. Madonna brags about getting her B12 injections in the butt. You don't need to be a celebrity, endure pain, or bare a buttock to get your B12. Just pop it under your tongue and go.
Posted by iHerb Customer on May 20 2009 | Verified Purchase
I've been taking the Jarrow Methyl B-12 for the past 4-5 months and have really noticed a differnece in how alert and focused I feel during the day! The Methyl formula is a MUST if you are going to notice a difference. I've been taking many different kinds of supplements for years and have never really noticed any difference in how I feel, but the Jarrow B-12's began working almost immediately! I will continue to order all of my supplements from i-Herb because of the incredible prices and super service that they give.
Posted by veganacnesufferers on February 15 2016 | Verified Purchase
Contrary to popular belief, not just vegans are at risk of B12 deficiency. In fact, 39% of the population should be taking supplemental B12, and methylcobalmin is the perfect source. Jarrow Formulas is the best brand around. My whole family takes it a couple of times a week, and we love it. I will continue to buy this high quality product as long as they keep making it!
Posted by iHerb Customer on August 31 2012 | Verified Purchase
I have been using Jarrow B12 for 6 months now. Tingling in my arms stoped, I have more energy, I sleep better, I'm more focused. It's a great product for me. I will most probably be using is for the rest of my life :)
Posted by iHerb Customer on June 28 2012 | Verified Purchase
I was taking a 5000 mcg supplement and after awhile it just seemed to be too much for my system. With this dosage I can always take more than one if I want but the 1000 mcg doesn't seem to be too much by itself.
Posted by iHerb Customer on May 17 2011 | Verified Purchase
Many thanks for this wonderful product ...I take one a day and have been feeling the positive benefits. Depression seems to have lifted and I am reccomending it to many of my riends who have been feeling down.
Posted by iHerb Customer on August 12 2010 | Verified Purchase
I trust Jarrow and the Methyl version of B-12 has the additional benefit of lowering histimines if you suffer from allergies.
Posted by iHerb Customer on July 9 2009 | Verified Purchase
great ingredients, excellent quality, but an annoyingly slow dissolving process. like with most sublinguals, you have to break up the tab or chew it to get it to absorb in a quicker fashion, and this methyl b-12 fits that mold. besides this point, it is a good product and provides me a nice boost and helps aid in recovery from weight training
Posted by iHerb Customer on October 24 2009 | Verified Purchase
This was the first time I ordered this type of product. They do not melt easily. In fact, it takes about a half hour. However, this may not be unusual.
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.