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Before sticking the needle into the vial, always clean the top of the vial with a NEW alcohol wipe
Warm temperatures and dusty or unclean environments can speed up contamination for either tap or filtered water
Vitamin B-12 injections work by bypassing the digestive system, ensuring full absorption of this crucial nutrient
Barisic et al
This is the core reason larger formats exist and the main argument for the 100mg vial
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