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Clean the injection site area and vial top with alcohol swabs

Vitamin B12 dosage The average recommended daily amounts, measured in micrograms, vary by age: Infants up to age 6 months: 0.4 micrograms Babies aged 7-12 months: 0.5 micrograms Children aged 1-3 years: 0.9 micrograms Kids aged 4-8 years: 1.2 micrograms Children aged 9-13 years: 1.8 micrograms Teens aged 14-18 years: 2.4 micrograms Adults (19+ years): 2.4 micrograms Pregnant: 2.6 micrograms Breastfeeding: 2.8 micrograms Vitamin B12 foods You can get vitamin B12 from animal products, which have it naturally, or from foods that have been fortified with it

For the full science, see the guide on how food affects BAC absorption

Without enough B12, the body can't produce these cells efficiently, leading to megaloblastic anemia, a condition that causes weakness and fatigue

It's an instinctive action for mixing things, but in this context, it's destructive

Bernstein PS et al (2016) Lutein, zeaxanthin, and meso-zeaxanthin: the basic and clinical science underlying carotenoid-based nutritional interventions against ocular disease