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 June 2 2014 | Verified Purchase
Essential for thyroid problems, and receding gums.. I don't have much energy without it. I use it with Thorne's Stress complex, and its helped with hair loss, sciatica, insomnia, ans painful periods.
Posted by iHerb Customer on August 28 2011 | Verified Purchase
Great product. No problems.
Posted by iHerb Customer on August 14 2011 | Verified Purchase
I bought this for my vegetarian son who just started college...and had a tremendous work load. He became very tired and stressed. I suspected he may have had a Vitamin B12 deficiency and ordered the Jarrow lozenges right away. These B12 lozenges really work. My son's energy increased within a few days and was able to pull through. Thank you Jarrow!
Posted by iHerb Customer on March 5 2011 | Verified Purchase
I ordered this product on a recommendation to curb side effects from Topamax as it causes a B-12 deficiency. It also has helped curb my extreme RLS and I am sleeping better than I have in years!
Posted by iHerb Customer on January 4 2011 | Verified Purchase
The best brand of b12 that I know of.
Posted by iHerb Customer on March 12 2010 | Verified Purchase
My husband and I have been taking this product for about 5 years. Being vegans, we need the extra B-12 and we were told by a nurse that this brand absorbs better. We certainly feel the difference.
Posted by iHerb Customer on December 12 2008 | Verified Purchase
I cut these in half, so I have enough for 200 days. A great product from Jarrow.
Posted by iHerb Customer on December 1 2008 | Verified Purchase
It's given me lots of extra energy without getting the shots of B-12. Take them religiously. I like the convenience of lozenges. And they taste really good too! Thanks again KJ
Posted by iHerb Customer on May 20 2008 | Verified Purchase
I highly recommend. Tried a another B12, but Jarrows was more effective, much happier.
Posted by iHerb Customer on October 29 2017 | Verified Purchase
I suspected b12 deficiency as I had been having digestion issues for a few years. I have been supplementing with this product, together with B complex, for about a month now. I can feel a slight relief in physical tensions that have been present quite a while. I think I sleep a bit better, too. Earlier I had been taking b12 as cyanocobalamin. So I think this is better. I will continue with this and hope that the good impacts still continue to rise.