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According to the 2025 meta-analysis by Alfalasi and colleagues, sublingual B12 showed an approximate 199% mean increase in serum B12 compared to approximately 307% for intramuscular injections
A study found, Parenteral vitamin B12 is more effective than oral supplementation in patients with severe deficiency or malabsorption. In summary, B12 injections are essential for treating many health conditions and absorption problems
People with severe kidney disease require more individualized dosing and monitoring because vitamin handling changes in renal impairment
Proper diet, supplementation (if needed), balanced nutrition, and healthy lifestyle habits work together to support energy and weight goals
Stress management: Chronic stress raises cortisol, which promotes fat storage (especially visceral fat)
