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They bypass the digestive system, delivering vitamin B12 directly into your bloodstream
According to clinical research parenteral administration (intramuscular or intravenous) is preferred over other drug administration routes in case of emergency situations as it provides first-pass metabolism avoidance, reliable therapeutic concentrations and better bioavailability of dosage (2) It can also be used in situations when oral route is not feasible
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doi: 10.1111/acps.13177 351
Patients buying peptides often do so without medical supervision or any assurance of quality control
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