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Side effects and cautions B12 has no established upper limit due to low toxicity, but injections can have side effects: Common: soreness, redness or swelling at the injection site
Favorable Safety and Tolerability Profile : Across available studies, AOD-9604 has shown a favorable safety profile with no significant adverse hormonal or metabolic effects observed at experimental doses
Plant-based vitamin B12 one of the few plant sources of B12 is the fresh water algae chlorella
It is not something to source or self-administer independently
For these individuals, vitamin B12 injections are often the most effective way to restore healthy B12 levels because they bypass the digestive system entirely, delivering the vitamin directly into the bloodstream for maximum absorption (around 95% compared to 25-50% for oral supplements)
For most people, dietary sources provide everything that is needed
