possible side effects from b12 injections Feeling worse after Injection: Answering concerns B12 Shots Side Effects And

Such symptoms last until the injections wear off

Dose escalation should be individualized, and patients should be counseled that the starting dose is not therapeutic for glycemic control but rather intended to reduce gastrointestinal adverse effects during treatment initiation

2 Pregnant women, individuals with diabetes, and those with upper respiratory ailments are more commonly affected

Elderly patients should call 999 immediately if they experience difficulty breathing, throat tightness, facial swelling, or widespread rash after B12 administration, as these may indicate a rare but serious allergic reaction requiring emergency treatment