can b12 injection make you sick Why Do I Feel Worse After My Injection? Causes & Management – Bolt Pharmacy Common & Rare Side Effects

If an opened vial is left at room temperature, its sterility is potentially compromised

Thinning skin, vasculitis, purpuric dermatosis, platelet deficiency, liver disease, vitamin K deficiency, vitamin C deficiency, moving your body during the injection, or dehydration may also cause bruising

A needle is quickly inserted into the deltoid muscle of the upper arm

Vitamin B12 or folate deficiency anaemia Symptoms NHS

A responsible provider should discuss your medical history, current medications, allergy status, baseline B12 levels, the specific form of B12 being administered, and the expected benefits and risks before proceeding with an injection