How many IU of vitamin B12 should I take daily?
The recommended daily intake (RDI) for vitamin B12 for people over 14 is 2.4 mcg ( 1 ). However, you may want to take more or less, depending on your age, lifestyle, and specific situation.
How many micrograms are in a IU?
2.5 mcg (micrograms) = 100 IU. 5 mcg = 200 IU. 10 mcg = 400 IU.
What does 1000 mcg B12 mean?
Lifelong vitamin B12 supplements may be required at doses between 100 and 1,000 micrograms. As such, “B12 vitamin 1,000 mcg” refers to a high dose (1,000 micrograms) of vitamin B12 suitable for someone with nutrient absorption issues or pernicious anemia.
What are the side effects of B12 1000 mcg?
Safety and side effects
- Headache.
- Nausea and vomiting.
- Diarrhea.
- Fatigue or weakness.
- Tingling sensation in hands and feet.
Is 25 mcg of B12 enough?
The government guidelines recommend a daily intake of 2.4 micrograms (mcg) of B12 to prevent deficiency, but for optimal health and disease prevention, we recommend a daily dose of 25 mcg. To get this much — particularly if you’re a strict vegetarian — you’ll probably need to rely on supplements or fortified foods.
How can I get 2.4 mcg of B12?
The average adult should get 2.4 micrograms (mcg) of vitamin B12 a day, according to the National Institutes of Health. Here are some of the best foods with B12: Clams, 3 ounces: 84 mcg. 100% fortified breakfast cereal (check the label), 1 serving: 6.
What is the difference between mg and mcg in vitamins?
The term “mg” stands for the measurement of “milligrams,” while “mcg” stands for “micrograms.” Both units are used to measure an object’s mass and to indicate an object’s weight. With reference to other units of measurement, a mcg is equal to . 001 mg. This implies that the microgram is smaller compared to a milligram.
Is 1000 mcg more than 2.4 mcg?
2.4mcg is only approximately 1/250th of 1000mcg.
Is 1000 mcg of vitamin B12 to much?
Vitamin B12 is unlikely to be toxic, even in high daily dosages. As most people need only 2.4 mcg of vitamin B12 daily, taking a 1,000 mcg dosage of vitamin B12 once a week is enough.