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& Klein, M
Quality control is crucial to minimize risks
You should consult your doctor about all the possible interactions of the drugs youre taking
Side effects and warning signs Which side effects are normal in the first few weeks
The B12 found in supplements typically doesn't need stomach acid to be absorbed
[73] As noted above, the completely synthetic laboratory synthesis of B 12 was achieved by Robert Burns Woodward and Albert Eschenmoser in 1972, though this process has no commercial potential, requiring more than 70 steps and having a yield well below 0.01%
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