b12 injection drug name Compounded Cyanocobalamin (Vitamin B12) Vitamin B12 Injection 1000 mcg

| | Intensive Performance Protocol | 10mg subcutaneous, 5x/week (weekdays) | 150mg oral, daily | Both compounds AM, pre-training | 6 weeks on, 4 weeks off | Athletic performance research, substrate utilization studies, endurance capacity trials | Higher dosing frequency and dose intensity produce more pronounced short-term shifts in RER and VO2 max, but require stricter adherence and increase washout sensitivity

B12 Testing Options At A Glance While the NHS is a fantastic resource, the long waiting times can feel like an eternity when youre not feeling well

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Working well

High-dose oral b12 (1000 to 2000 mcg daily) provides adequate absorption through passive diffusion even without intrinsic factor

Cycle : 4-12 weeks on, 4 weeks off