b12 injections last for how long Do Vitamin Stay In the Body? How Long Do the Benefits

Lowering protein by an average of 0.72 grams per kilogram of body weight per day resulted in an average decrease of 25% in IGF-1 (30)

Most B12 supplements are well tolerated, but responses differ

Storti et al

Unlike deficiency states, which produce well-characterised neurological and haematological symptoms, there is no clearly defined clinical syndrome associated with B12 excess from supplementation alone

Vitamin B12 and Vitamin D injections are generally safe when administered by qualified healthcare professionals

However, normalization of blood parameters does not mean that the damaged tissue has been repaired