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can you take b12 injections at home How To Give Yourself Vitamin Shots (with video!) how often do you have
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Your husband needs a thorough workup

"Risk factors of vitamin B(12) deficiency in patients receiving metformin"
Leduc-Gaudet JP, Reynaud O, Hussain SN, Gouspillou G

Very hard to believe others are not experiencing same
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Gently aspirate by pulling back slightly on the plunger to check for blood: If blood appears , stop, withdraw, and restart in a new spot
