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Description
Smaller dilution volumes create highly concentrated solutions where a 250 mcg dose may require only 23 syringe units
This deficiency can be caused by poor dietary consumption, a breakdown in the digestive process, or from taking certain medications that make it difficult to absorb B12 (such as antacids)

The surefire way of doing that is by injecting into the muscle. 2
Sterility: Sterile-filtered (0.22m) for research use

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