headaches after b12 injections Why Do I Feel Worse My Injection? Causes & Management – Bolt Pharmacy Why do I feel worse

This is also why you might notice that diets and exercises that worked for you in the past do not work as well or at all later in life

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Okay, we have covered the basics of B12 injections

Other side effects that can occur include: Excessive sweat production Rapid weight gain Pain when breathing Shortness of breath when lying down Anxiety Increased or irregular heart rate Numbness, tingling or muscular weakness Increased thirst Urinary frequency B12 injections can also cause allergy symptoms immediately after administration, like difficulty breathing, a swollen throat, mouth, or swelling of the mouth, tongue or face