contraindications of b12 injections Vitamin Important Injection Contraindications, Before giving

Routine thyroid monitoring is not required in users without risk factors

160-200 pounds (72-90kg): The standard 400mcg daily protocol works well for most individuals in this range

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

The benefits typically last 1 to 2 weeks