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If you're unsure which option is right for you, discuss your symptoms, medical history, and lab results with your healthcare provider before beginning supplementation
The Food and Nutrition Board has established recommended dietary allowances and dietary reference intakes for vitamin B12
A 300mcg protocol in the clinical setting might translate to 350-400mcg in practical application to ensure adequate exposure
Zuri Hemphill-Bryant, an Atlanta-based OB-GYN, tells Romper via email
A U-100 syringe holds 1mL total volume divided into 100 units
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