why do i need a vitamin b12 injection Best Site: Administering B12 Shots Feeling worse after B12 Injection:

Folic acid alone will not treat Vitamin B12 deficiency or prevent possible damage to the spinal cord

Some people also have a hard time absorbing vitamin B12 through digestion

These include: Pain, redness, or swelling at the injection site Bruising or hardening of tissue (induration) Itching or warmth around the injection area Temporary discolouration of the skin These localised reactions typically resolve within 2472 hours

This range helps doctors tailor treatments based on how bad the deficiency is and how well the patient responds

Research has shown that long-term use of certain drugs can interfere with absorption pathways