Before use, the solution in the ampoule should be carefully examined for any signs of discoloration or cloudiness, and questionable solutions should be discarded
They are usually safe but can cause problems for some people
Your provider will adjust frequency as needed based on how you feel and respond
This diagnostic step is crucial for determining the cause of the deficiency and creating an appropriate treatment plan
Still, more is not automatically better, and frequency should be guided by a licensed provider who knows your history
[91] Since only bacteria and some archea possess the genes and enzymes necessary to synthesize vitamin B 12 , plant and algae sources all obtain the vitamin secondarily from symbiosis with various species of bacteria, [5] or in the case of fermented plant foods, from bacterial fermentation