injecting b12 in thigh Vitamin Injection Sites: All You Need to Know Best Vitamin B12 Injection Site:

Resistance when drawing or injecting If the solution seems thicker than usual, requires more pressure to draw into the syringe, or feels different during injection, aggregation may have increased the viscosity

You may notice slight swelling, redness or bruising following the injections, but these effects are temporary and dont generally interfere with any activities

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Possible side effects include: Pain or redness at the injection site Mild nausea Headache Dizziness Skin rash Allergic reactions (rare) Seek immediate medical attention if you experience swelling, difficulty breathing, or other signs of a severe allergic reaction