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What to avoid Do not use bacteriostatic water that: Has no expiration date or lot number Comes in non-medical packaging Is significantly cheaper than pharmacy-grade options Shows any cloudiness, discoloration, or particulate matter Has a damaged seal or compromised packaging Counterfeit or substandard bacteriostatic water is a real concern

Plus, to learn more about how to check your vitamin B12 status, see: Vitamin B12 Deficiency Test