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Label of vial contains information regarding concentration, active ingredient, batch number, expiry date and storage precautions
How many weeks will a reconstituted vial last before it expires
Expected Results Timeline Side Effects At injection site (common): Pain and discomfort at injection site normal and expected Mild redness or local swelling Systemic (less common): Mild nausea Transient headache Rare allergic reaction skin redness, itching, difficulty breathing Severe allergic reaction (very rare): Sudden redness, difficulty breathing, blood pressure drop go to the nearest emergency department immediately
This review included both RCTs and observational studies (N-RCTs, cohort, and case-control) to assess the efficacy of various Vitamin B12 administration routes