how will i feel after vitamin b12 injection Why Do Worse My Injection? Causes & Management – Bolt Pharmacy Benefits of Vitamin B12 Shots

Tell your doctor right away if you experience any of the following: Muscle cramps Weakness Irregular heartbeat Seek immediate medical attention if you experience an allergic reaction

Proton pump inhibitors (PPIs) and H2-receptor antagonists, used for acid reflux, reduce stomach acid production, which can impair dietary B12 absorption, though this does not directly affect injections

For life-threatening symptoms such as chest pain, severe allergic reaction, or loss of consciousness, call 999 immediately

Normal size needle Intramuscular (in the muscle) 25 gauge 1 inch or 1.5 inch needle 10 sterile needles / syringes come in one box