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The vial should then be gently swirled never shaken until the powder is fully dissolved

Use of certain medications that may interact with B12 or choline metabolism (e.g., metformin, proton pump inhibitors, or anticholinergic drugs)

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Key Features Authentic Pfizer/Hospira bacteriostatic water 30mL multi-dose sealed vial 0.9% benzyl alcohol preservative Manufacturer-labelled sterile, non-pyrogenic preparation Consistent reference material for laboratory workflows Format & Handling This vial contains sterile water with 0.9% benzyl alcohol

Patients with Hunner lesions should be treated differently from those without Hunner lesions (Statement 19 and Algorithm)