Ongoing research seeks to better understand its role in NAD
How long B12 shots take to work depends on your B12 levels when you receive the injection, but you can expect to see improved energy, mental clarity, sleep, and other benefits anywhere from 12-48 hours after treatment
Real Patient Case Studies Case Study #1: Executive Recovery and Body Recomposition Patient: 47-year-old male tech executive Chief Complaints: Poor recovery from workouts, increasing abdominal fat despite consistent exercise, declining sleep quality, mental fog Baseline Labs: IGF-1: 142 ng/mL (low for age) Testosterone: 387 ng/dL (low-normal) Body fat: 26% (DEXA) Visceral fat area: 187 cm (elevated risk) hs-CRP: 3.2 mg/L (elevated inflammation) Treatment Protocol: Weeks 1-4: Optimize testosterone to 700+ ng/dL using testosterone cypionate, address vitamin D deficiency (was 24 ng/mL) Weeks 5-20: Add sermorelin 300 mcg nightly, 6 days/week Weeks 21-32: Add tesamorelin 2 mg daily to target stubborn visceral fat 32-Week Results: IGF-1: 267 ng/mL (+89%) Body fat: 18.5% (-7.5 percentage points) Lean mass: +6.8 kg gained Visceral fat area: 98 cm (-48% reduction) hs-CRP: 0.8 mg/L (normalized) Sleep: Improved from 5.5 to 7.2 hours average, with 23% increase in deep sleep (Whoop tracking) Patient Report: The combination of testosterone optimization and peptides was transformative
Cyanocobalamin is primarily prescribed for vitamin B12 deficiency, which can occur due to a variety of conditions such as pernicious anemia, prolonged use of certain medications, surgery in the gastrointestinal tract or dietary deficiencies
Higher-dose oral B12 (e.g., 1000 g daily) is sometimes used but should only be considered under clinical supervision with appropriate monitoring, particularly in cases of malabsorption where intramuscular treatment remains the first-line approach in UK practice
