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[152] Healthcare practitioners at clinics and spas prescribe versions of these intravenous combination products, but also intramuscular injections of just vitamin B 12
Avoid Over-Dilution: Adding too much water (e.g., 10 mL to a 2 mg vial) results in a dilute solution, requiring larger injection volumes that may be impractical or uncomfortable
That selectivity matters in research for two reasons: Cleaner interpretation: If a compound pushes fewer off-target endocrine pathways, observed outcomes are easier to connect to the intended mechanism
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