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 B 12 Intramuscular vs. Subcutaneous Injection B12 vitamin Store Intramuscular vs Subcutaneous Injections for vitamin B12 supplements. Amazon.com: B12 Shot Best Vitamin B12 Injection Sites: Where to Inject B12 PA Relief
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