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after an intramuscular injection of 1,000 g of cyanoB 12 , about 150 g is ultimately retained in the body 15 Most vitamin B 12 -deficient individuals in the UK and other countries are treated with intramuscular vitamin B 12 , and vitamin B 12 replacement has been traditionally administered intramuscularly

Microbiome Interactions: Does BPC-157 interact with gut microbiota

But the reality is more complex than marketing materials suggest, and the research tells a different story than many providers claim

Many people experience low B12 levels due to diet, stress, or absorption issues, which can lead to fatigue, brain fog, and mood imbalances