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Before booking a B12 injection this spring, get your levels tested
These may include but are not limited to: Pain or swelling at the injection site Allergic reactions (extremely rare) If you experience any concerning side effects, contact your healthcare provider immediately
Most people who have a vitamin B12 injection feel either nothing different or a gradual lift in energy over the following days
Similarly, folate requirements rise during active cell division, and inadequate folate can limit the effectiveness of B12 therapy
People with low B12 may experience: Persistent fatigue or low energy Weakness Brain fog, concentration issues, or memory changes Low mood or irritability Pins and needles, numbness, or nerve-type sensations Mouth ulcers or a sore tongue Paleness or shortness of breath (if anaemia is present) Some symptoms can become more serious if deficiency is prolonged, particularly neurological symptoms
