can b12 injection cause headache I've had a migraine since Sept 4th. I took a that day (prescribed by my doctor) so I'm wondering if it's related or coincidence. I'm scared to take another one Vitamin B12 + MIC Injections
Description
Br J Haematol 1967;13:216-28

Symptoms of too much vitamin B12 Dr Thornber said one of the signs of too much vitamin B12 is urine discolouration

Results & Follow-Up Most patients notice improved energy, mood, and clarity within hours of their vitamin B12 injection

For that reason, technical sourcing decisions often include purity review, storage validation, and protocol matching to the underlying model rather than broad generalisation
Available at: 56 World Anti-Doping Agency (2024c)

When B12 is low, it can affect athletic performance
