subcutaneous vitamin b12 injections How to self-inject intramuscular - Overview Cyanocobalamin Injection - Cleveland Care

For people with normal B12, any weight change is usually small, inconsistent, and behaviorally driven (more activity, better appetite) rather than a direct effect of the vitamin

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Yes, switching forms is a valid strategy when symptoms remain despite normal labs

Roux-en-Y gastric bypass surgery (RYGB) but not sleeve gastric bypass surgery or gastric banding, increases the risk of vitamin B 12 deficiency and requires preventive post-operative treatment with either injected or high-dose oral supplementation

Remember, diabetes patients have been self-injecting that way for decades