can you have b12 injections in pregnancy While Pregnant: Benefits, Dosage & Safety Info Roles of Vitamin B in
Description
Comparison of retention following intramuscular injection of cyanocobalamin and hydroxocobalamin

Menstrual cycle timing may affect response, with some women reporting better results when beginning protocols at specific cycle phases

"Unexpected high plasma cobalamin: proposal for a diagnostic strategy"
for this reason, some clinicians recommend an intradermal test dose in individuals who may be at risk of thiamine allergy
