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These are the standard B12 injection sites for self-administration
The copper peptides for hair growth page discusses how different variants compare for this application
A B12 injection is a dose of vitamin B12 given either under the skin (subcutaneous, or subQ) or into a muscle (intramuscular, or IM)
Birth control pills: The data regarding the effects of oral contraceptives on vitamin B12 serum levels are conflicting
Insert the needle through the KLOW stopper, angle it toward the inside glass wall, and let the water run down the side instead of forcing it directly onto the powder