US$ 24.82
5 mg b12 injection Injections at Olympia Vitamin B Vitamin B-12 Injection - Mobile
Description
2013, pp

The combined effect may be stronger than expected
If you miss a scheduled dose, contact your clinic to reschedule

There is absolute chance of presence of undesirable particles or endotoxins in solution, so sterile filter is used in pharmaceutical industry to get rid of all of them
A deficiency can also result from not getting enough B12 in what you eat due to various food restrictions