Our expert says:
I am not aware of any direct negative impact that caffeine will have on the molecular absorption on Vitamin B complex over the cell membrane of the gastro-intestinal tract. Excessive intake of caffeine can however, cause dietry changes that will effect the intake of Vitamin B's. It is also possible that caffeine being a stimulant, will cause the metabolism to increase and food will hence be past through the gastro-intestinal tract faster and vitamins will not be absorb as it should.
Dr Anrich Burger
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