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Pentose phosphate pathway The PPP diverges at the first step of glycolysis, which serves as the largest contributor of cytosolic NADPH and NADPH generation undergoes three irreversible reactions in the PPP oxidative branch

Others employ penetration enhancers that temporarily increase skin permeability

Recommended Dosing Protocols Common bodybuilding and recovery-focused protocols include: Subcutaneous: 200500 mcg once or twice daily, near the injury site or in abdominal fat Intramuscular: 200300 mcg directly into the affected muscle, rotating sites Oral: 250500 mcg dissolved in water once daily, though bioavailability may vary Many protocols begin at the lower end, around 200 mcg, during the first week to assess tolerance

Vitamin B12 is available in two forms that are given through injection

For 1.0mg, draw 30 units

(Elsevier, 2016)