can b12 injections cause itching Been on T for 5 weeks, all sites suddenly (in the past few days) became red and itchy : r/ftm Pernicious Anemia: Genomics and B12

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If you are suffering from extreme fatigue, lethargy, muscle weakness, pins and needles, mouth sores, or cognitive problems including irritability, depression, or lapses in memory, it may be a sign that you are deficient in Vitamin B12 and could benefit from regular supplementation with Vitamin B12 booster injections

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Note: Vitamins and supplements should be used as part of a healthy lifestyle and should not be used as a substitute for a balanced diet or exercise