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B12 shots are usually safe
The solution is stable under normal conditions when sealed
Froese DS, et al
Prepare smaller batches if your protocol allows some users report reduced efficacy after 2 weeks
The smaller barrel makes small volumes more visible and precise
Gut surgery, pancreatic insufficiency, small intestinal bacterial overgrowth (SIBO), parasite infections, and certain autoimmune disorders are considered additional risk factors
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