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In comparison, 98.5% purity is said to be pharmaceutical grade by those in the know
It produces 5,000mcg/mL -- clean numbers across the documented escalation from 2.5mg through 15mg
Sub-spec marketplace product that started at 0.7% benzyl alcohol instead of 0.9%, or with pH outside the 4.5-7.0 range, doesn't get the full 28-day window even with perfect storage
Methotrexate, heparin and insulin are all automatically given to patients to self inject at home, but all these are medications which need strict control, in contrast B12 injections (hydroxocobalamin) cannot be overdosed
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