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  2. Healthline
    https://www.healthline.com/nutrition/vitamin-b12-dosage

    Vitamin B12 Dosage: How Much Should You Take per Day?

     
  3. Mayo Clinic
    https://www.mayoclinic.org/drugs-supplements-vitamin-b12/art-203…

    Vitamin B-12 - Mayo Clinic

  4. Office of Dietary Supplements (ODS)
    https://ods.od.nih.gov/factsheets/Vitaminb12-HealthProfessional

    Vitamin B12 - Health Professional Fact Sheet

  5. Vertaald uit het Engels.
    Origineel weergeven

    Vitamine B12-tekort

    Ook bekend als: Vitamine B12 deficiëntie
    Inhoud medisch beoordeeld door
    Dr. Karthikeya T Mverified specialist
    MD, Internal Medicine
    Volledig profiel weergeven opLinkedIn logoLinkedIn
    Een aandoening die wordt gekenmerkt door een laag vitamine B12-gehalte.
    Is de aandoening te behandelen?
    Is te behandelen door een medische professional
    Is er een laboratoriumtest of scan nodig om de diagnose te stellen?
    Vereist labonderzoek of medische beeldvorming
    Benodigde tijd voor herstel
    Kan weken of maanden duren
    Aandoening markeren
    Veelvoorkomend voor leeftijden van 50 en ouder
    Afbeelding ziekte
    Bron: Focus Medica (Engels),vertaald naar [Nederlands]. Alleen voor informatieve doeleinden. Raadpleeg een dokter voor advies. Meer lezen
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    How much vitamin B-12 should I take a day?
    The recommended daily amount of vitamin B-12 for adults is 2.4 micrograms (mcg). Most people can get enough vitamin B-12 in the foods they eat. But people who follow a vegetarian or vegan diet should eat nutritional yeast and other foods fortified with vitamin B-12. Or they can take a low-dose multivitamin that includes 2.4 mcg of vitamin B-12.

    Vitamin B-12 - Mayo Clinic

    mayoclinic.org
    How much vitamin B12 is in a supplement?
    The amount of vitamin B12 in supplements varies widely. Some provide doses of vitamin B12 that are much higher than recommended amounts, such as 500 mcg or 1,000 mcg, but your body absorbs only a small percentage of it. These doses are considered safe. Check the Supplement Facts label to see how much vitamin B12 a supplement contains.

    Vitamin B12 - Consumer - Office of Dietary Supplements - Vitamin B12

    ods.od.nih.gov
    How much vitamin B12 should a pregnant woman take?
    Higher doses of up to 1,000 mcg, or 1 milligram (mg), may be necessary for some (13). Pregnant people have slightly higher vitamin B12 needs than the general population. Low maternal levels of this vitamin have been associated with birth defects in infants (14).

    Vitamin B12 Dosage: How Much Should You Take per Day? - Healthline

    healthline.com
    How can I reduce vitamin B-12 levels in my body?
    Proton pump inhibitors. Taking omeprazole (Prilosec), lansoprazole (Prevacid) or other stomach acid-reducing drugs might decrease your body's ability to absorb vitamin B-12. Vitamin C (ascorbic acid) supplements. Taking vitamin B-12 with vitamin C might reduce the available amount of vitamin B-12 in your body.

    Vitamin B-12 - Mayo Clinic

    mayoclinic.org
    What is a Daily Value (DV) for vitamin B12?
    *DV = Daily Value. FDA developed DVs to help consumers compare the nutrient contents of foods and dietary supplements within the context of a total diet. The DV for vitamin B12 is 2.4 mcg for adults and children age 4 years and older . FDA does not require food labels to list vitamin B12 content unless vitamin B12 has been added to the food.

    Vitamin B12 - Health Professional Fact Sheet

    ods.od.nih.gov
    How much vitamin B12 should a vegetarian take?
    There are currently no government recommendations for B12 supplement dosages for vegetarians. However, one study suggests that doses up to 6 mcg of vitamin B12 per day may be appropriate for vegans (19).

    Vitamin B12 Dosage: How Much Should You Take per Day? - Healthline

    healthline.com
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