That preservative is the reason you can open the same vial, use a little, and come back to it over the following weeks instead of throwing it out after one use
For diagnosed deficiency, weekly for 6 to 8 weeks, then biweekly, then monthly maintenance based on follow-up labs
Low B12 can cause a lot of harm if not treated
Once dissolved, you now have your precisely concentrated solution
Autoimmune conditions can go into remission, sometimes sustained remission, but the underlying genetic susceptibility persists
(2.5) Dosage Forms and Strengths Contraindications Warnings and Precautions Decreased Anticoagulant Effect of Warfarin: Periodically monitor prothrombin time/INR