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Poor technique and incorrect landmarking of the injection site can lead to site reactions, sub-optimal medication absorption and adverse events
While RCTs remain the gold standard for intervention assessment, observational studies provide complementary evidence, especially when using objective biomarkers such as serum Vitamin B12, MMA, and homocysteine
Mild soreness at the injection site may arise but usually resolves within a few hours
If you choose to inject intramuscularly, insert the needle at a 90-degree angle
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