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How to Administer B12 Injections Correctly Faces How to self administer subcutaneous B12 injection., 1. Withdraw proper dosage from vial into an insulin syringe, 2. Clean site of injection (abdomen or other proper site), 3. Pinch the skin where you Vitamin C and B12 Injection Techniques How to Give Yourself a B12 Injection ThinWorks
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