b12 injected subcutaneously or intramuscularly injection subcutaneous vs.intramuscular b12 injections im sq Subcutaneous (SC) and Intramuscular (IM) Injections– Sandoz Vitamin B12 Injectable Solution
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It was worth going through it and I'm very thankful I didn't let the initial side effects stop me

Theyre safe and easy to administer

And 0.625 mL becomes 62.5 units

Thank you to Millennia Wellness for helping me come through for a huge event