Make sure your choose a sublingual form of B12.
This is perhaps the most important consideration when choosing a b12 supplement. While regular supplements such as your multi-vitamin or b-complex vitamins might have plenty of b12, his particular vitamin is poorly absorbed by the stomach and the intestine. While it will still do some good, swallowing Vitamin B12 in pill form is not optimal.
On the other hand, when a sublingual B12 is placed under the tongue and allowed to dissolve- the B12 enters the blood stream directly through the blood vessels on the lining under the tongue. This is a much more effective way to raise B12 levels in the body.
Why "Methyl" Vitamin B12 is more effective.
There are primarily two different ingredients being used in sublingual b12 supplements. They are cyanocobalamin and methylcobalamin. The cheapest and most common option for use in supplements is cyanocobalamin. Although cyanocobalamin is a good option, the best products on the market are now using methylcobalamin as the primary ingredient. The reason for this is that the liver must convert cyanocobalamin to methylcobalamin before the body can utilize it.
Methyl B12 supplements contain the most bioavailable and active form of B-12. Since it requires no conversion by the liver, it is in a form ready to be used by the body. Expect to pay more for Methyl B12, but the increased effectivness will make it worth the cost.
Note : This is found in TriVita's Super Sublingual B12 product
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