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Description
As for pushing out things I know work

Bacteriostatic water contains a small amount of benzyl alcohol, which prevents bacteria from growing in the solution after the vial is opened
Because some people are asymptomatic or their symptoms can be similar to other nutritional deficiencies, a B12 deficiency may be hard to detect

This will vary amongst people of different ages and circumstances

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Manufacturer: Becton Dickinson, Made in USA