is b12 injection over the counter Do You Need a Prescription for Injections? Vitamin B12 shots: Uses, benefits,

2 mg Dose: Draw 40 units (0.4 mL)

It contains a bacteriostatic preservative that helps inhibit the growth of bacteria after the vial has been opened, making it suitable for repeated laboratory use under controlled research conditions

They use a simple log, physical or digital, that records every open vial by puncture date and calculated discard date

This depends on how well the body responds and what it needs

These may include: Pain or irritation at the injection site

[114] This functionality is lost in vitamin B 12 deficiency, and can be measured clinically as an increased serum methylmalonic acid (MMA) concentration