b12 patches vs injections Vitamin Injection Sites: All You Need to Know Vitamin B12 Skin Patches –
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The process is quick and efficient, with minimal discomfort

Support for Nervous System Health: B-12 is essential for maintaining a healthy nervous system

Many patients start to feel better within a few days to a week after starting methylcobalamin injections, especially if they were significantly deficient
PMID 19116332

But restarting the same dose, I didnt really feel full, might be because I may be immune
