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Optimal dosages may vary

Common side effects are typically mild and transient: Pain, redness, or swelling at the injection site (most frequent) Mild diarrhoea or gastrointestinal upset Headache or dizziness shortly after administration Itching or mild skin reactions Temporary pink/red discolouration of urine These effects usually resolve within 2448 hours without intervention

First, tumours can affect the liver, which stores large amounts of B12

First, greater receptor potency

[3] These include poor growth, apathy, having no desire for food, and developmental regression

Vitamin B12 may interfere with its effectiveness if you take other medications