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Proper sterile handling is essential to avoid infection or tissue irritation
[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%
In some cases, a veterinarian may choose to give it intravenously
Your results can last longer with some factors like taking the right diet, changing your lifestyle, stop smoking and avoiding sun exposure
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