Since B12 is a water-soluble vitamin, it’s generally considered safe, even at high doses. No Tolerable Upper Intake Level (UL) has been established for B12, due to its low level of toxicity.
How much B12 can a pregnant woman take?
Pregnant women need 2.6 micrograms per day of vitamin B12. Good food sources include clams, mussels, crab, salmon, skim milk, beef, chicken, and turkey. It is also added to some breakfast cereals. Your body needs vitamin B12 to keep your blood cells and nerve cells working properly.
Does vitamin B12 affect pregnancy?
If you’re pregnant, not having enough vitamin B12 can increase the risk of your baby developing a serious birth defect known as a neural tube defect. The neural tube is a narrow channel that eventually forms the brain and spinal cord.
Can B12 cause miscarriage?
B12 deficiency and Miscarriage: Far More Common Than Doctors Think. A recurring theme in medical literature is that B12 deficiency is a fairly rare cause of miscarriage or stillbirth.
What does it mean if your B12 is too high?
An abnormally high vitamin B-12 status can be an early sign of liver disease, diabetes, or certain types of leukemia. A doctor may use the results of a vitamin B-12 test to help form their diagnosis.
Can you take B12 and prenatal vitamins together?
Your doctor may ask you to supplement B12 with folic acid if you are vitamin B12 deficient before pregnancy. Both of these supplements together will help prevent birth defects in developing babies as well as helps combat defects that affect the spine and central nervous system.
Does too much B12 cause autism?
Research presented by researchers from Johns Hopkins University caused a frenzy in 2016. They found that moms with extremely high levels of folic acid and vitamin B-12 in their blood were linked to an increased autism risk of nearly 18 percent.
What is the best time to take vitamin B12?
Water-soluble vitamins absorb best on an empty stomach. That means taking them first thing in the morning, 30 minutes prior to eating, or two hours after a meal. Water-soluble vitamins dissolve in water so your body can use them. Vitamin C, all B vitamins, and folate (folic acid) are water soluble.
Can you take too much B12?
Since B12 is a water-soluble vitamin, it’s generally considered safe, even at high doses. No Tolerable Upper Intake Level (UL) has been established for B12, due to its low level of toxicity. UL refers to the maximum daily dose of a vitamin unlikely to cause adverse side effects in the general population.
Does vitamin B12 help with pregnancy nausea?
Vitamin B12 to Treat Vomiting
Studies suggest that taking vitamin B12 improves vomiting for many pregnant women. There has been no sign of harm to the fetus with vitamin B12 use. In fact, a combination of vitamin B12 and folic acid is thought to prevent neural tube defects in the growing fetus.
Can magnesium hurt a fetus?
Administration of magnesium sulfate injection to pregnant women longer than 5-7 days may lead to low calcium levels and bone problems in the developing baby or fetus, including thin bones, called osteopenia, and bone breaks, called fractures.
Can vitamin B12 cause high blood pressure?
Vitamin B12 was significantly associated with blood pressure when folic acid intake was high and vice versa. Considering that folic acid and vitamin B12 act together as cofactors in converting homocysteine into methionine,6 folic acid, and vitamin B12 may have synergic effects on blood pressure or endothelial function.
How long does it take to get rid of excess B12?
If a person stops consuming the vitamin, the body’s stores of this vitamin usually take about 3 to 5 years to exhaust. People should not take high doses of vitamin B12 as a cure-all, but otherwise the vitamin does not appear to be toxic; consuming excess amounts of B12 is not recommended.
How do you know if your B12 is low?
Symptoms of Vitamin B12 Deficiency
- Weakness, tiredness, or lightheadedness.
- Heart palpitations and shortness of breath.
- Pale skin.
- A smooth tongue.
- Constipation, diarrhea, loss of appetite, or gas.
- Nerve problems like numbness or tingling, muscle weakness, and problems walking.
- Vision loss.
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What is a normal B12 level for a woman?
Understanding the Results
But a normal level of vitamin B12 in your bloodstream is generally between 190 and 950 picograms per milliliter (pg/mL). Between 200 to 300 pg/mL is considered borderline and your doctor may do more testing. Below 200 pg/mL is low and more testing is needed.