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This carrier-mediated transport may operate purely passively (as in facilitated diffusion) or it may be coupled to the electrochemical gradient of Na + (as in active transport)
Doctors may recommend vitamin B12 supplements if you have certain health conditions or dietary restrictions
It also supports stronger bones
WonderLabs Pet Factor B-12 : This pet supplement contains vitamin B12 (in the more readily available form of methylcobalamin), folic acid, and intrinsic factors
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