b12 injections and breastfeeding injection daily dose B12 Injections: What's the Buzz? Vitamin B12 Injection Dosage: 7 – How to Give a B12

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If simple measures do not provide relief within two to three weeks, further medical review is appropriate to exclude other causes and consider alternative supplementation routes

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

Seek medical help if you develop severe allergy symptoms, breathing difficulty, or persistent skin reactions