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Contraindications include Leber's disease and certain chemotherapy protocols
Future trials should also measure important outcomes such as the clinical signs and symptoms of vitamin B 12 deficiency, health related-quality of life, socioeconomic effects, and report adverse events adequately, preferably in a primary care setting. Clinical practice guidelines British Columbia Medical Services Commission (MSC)
This ensures faster, more noticeable results than oral supplements, helping you feel energized, focused, and revitalized almost immediately, providing an efficient solution for fatigue and low energy levels
Because oral supplements are absorbed less effectively, you need to take them far more frequently than you would need an injection
New England Journal of Medicine, 368(2), 149-160
