A member asked:

Can i take b12 under tongue along with super b complex in the same day?

A doctor has provided 1 answer

Yes: It is near impossible to overdose on B12 as it is water soluble and easily excreted. My question is do you have a known deficiency or not? If so, levels should be followed by your physician. If not, you probably aren't gaining too much from these high levels besides a lot of B12 in your urine.

Answered 7/28/2014

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What causes tongue tingling for months besides a B12 deficiency?

4 doctors weighed in across 2 answers