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Although you may eat plenty of B-12-enriched food, your body may not absorb it or use it efficiently due to aging, alcohol intake, and pollutants from the environment, all of which can take a toll on your body and digestion

Best B12 supplement for energy Price: $$$ (for vitamin B12 only) Vitamin B12 form: methylcobalamin, adenosylcobalamin, hydroxocobalamin Supplement type: capsule Dosage: 250 mcg Count: 30 Quality and safety standards: cGMP compliant, third-party tested Why we chose it: Another subscription service, Care/of provides personalized vitamin recommendations based on a quick online quiz about your lifestyle and goals

B-vitamin status and bone mineral density and risk of lumbar osteoporosis in older females in the United States

Good packaging, simple to use