how to give a vitamin b12 injection subcutaneous self administer injection. 1. Withdraw proper dosage from vial into an insulin syringe 2. Clean site of (abdomen or other proper site) 3. Pinch the skin where Size and Gauge:29 Gauge, 0.5 cc, 1/2" Inch (12.7mm) Vitamin B12, D & B12 for Malabsorption in Pets
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