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The first two layers inform context
Long-term effects beyond this window remain largely unknown
A smaller group feels briefly worse first: tired, achy, headachy or off-colour for a day or two
Medications : Some medications, such as metformin and proton pump inhibitors, can interfere with B12 absorption, necessitating more regular injections
Recordkeeping: Log the daily dose, injection site and any observations to keep the protocol consistent
Peptides are biologics
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