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Summary: Vitamin B12 supplements can be taken at any time of day, as absorption mechanisms function consistently throughout the 24-hour cycle, with consistency being more important than specific timing
The best sources include organ meats, shellfish (especially clams), beef, fish like tuna and salmon, and dairy products like milk, yogurt, and cheese
Dosage or frequency: you may need an adjusted schedule
Monitor how well improvements hold after discontinuing active treatment
Wang Z, Zhou W, Zhang Z, Zhang L, Li M
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