Its suggested to give this dose daily or every other day for one to two weeks to effectively address the deficiency
Some medications also reduce B12 absorption (Sobczyska-Malefora et al., 2021) among the main ones are: metformin, proton pump inhibitors (PPIs), such as omeprazole, lansoprazole and esomeprazole, and H2-receptor antagonists, such as ranitidine, cimetidine, famotidine and nizatidine
Magnesium-L-threonate is another form of magnesium that may better penetrate the central nervous system
Nevertheless, observational studies such as these cannot determine whether low levels of vitamin B12 were the cause of the weight gain or whether higher levels of vitamin B12 protected against lower levels
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