b12 injections for sale at Olympia 12 levels and alleviate associated clinical signs Vitamin B-12 3000 mcg Injection,
Description
Some studies use an insufficiency threshold, in addition to a deficiency threshold
The University of Michigan also warns that a B12 shot is not recommended for people with Lebers disease (7)

Performance and endurance related cellular markers examined in laboratory energy regulation research

So, is there a concern about overdose

Nature 2014

Unknown long-term profile: No human safety data, so caution and monitoring are advised
