6/14/2023 0 Comments 10000 mcg to mgIn people with normal absorption, deficiencies have been reported only in strict vegetarians who consume no products of animal origin (including no milk products or eggs). Vitamin B12 is not present in foods of plant origin, but is abundant in foods of animal origin. The average diet supplies about 5 to 15 mcg/day of vitamin B12 in a protein-bound form that is available for absorption after normal digestion. Prompt parenteral administration of vitamin B12 prevents progression of neurologic damage. Intrinsic factor deficiency causes pernicious anemia, which may be associated with subacute combined degeneration of the spinal cord. Gastrointestinal absorption of vitamin B12 depends on the presence of sufficient intrinsic factor and calcium ions. Intravenous administration results in even more rapid excretion with little opportunity for liver storage. The major portion is excreted within the first eight hours. Within 48 hours after injection of 100 or 1000 mcg of vitamin B12, 50 to 98% of the injected dose may appear in the urine. The liver is the main organ for vitamin B12 storage. Absorbed vitamin B12 is transported via specific B12 binding proteins, transcobalamin I and II to the various tissues. Should you be interested, we've covered the conversion of milligrams to milliliters (mg to ml) in an article here.Vitamin B12 is essential to growth, cell reproduction, hematopoiesis, and nucleoprotein and myelin synthesis.Ĭyanocobalamin is quantitatively and rapidly absorbed from intramuscular and subcutaneous sites of injection the plasma level of the compound reaches its peak within 1 hour after intramuscular injection. If you wish to convert between micrograms (mcg) and milligrams (mg) you can do so using the mcg to mg converter. Additional resourcesĭTS Regulatory Consultants has a vitamin converter on their website. As with all calculations where health could suffer from inaccurate conversions, you are advised to check with a health professional before taking a dosage of any vitamin or supplement. Note that the information contained here is purely for casual interests and is not intended to replace your doctor's advice. To convert this to mcg, using the information above, I would multiply it by 0.3:Ĭonversely, if the soft gel capsule was described as '150mcg of Vitamin A as retinol' and I wanted to convert to IU, I would divide it by 0.3. Let's say that I have a soft gel capsule that contains 500 IU of Vitamin A as retinol. Vitamin E: 1 IU is the biological equivalent of about 0.67 mg d-alpha-tocopherol, or 0.9 mg of dl-alpha-tocopherol.Vitamin D: 1 IU is the biological equivalent of 0.025 mcg cholecalciferol or ergocalciferol.Vitamin C: 1 IU is 50 mcg L-ascorbic acid.Vitamin A: 1 IU is the biological equivalent of 0.3 mcg retinol, or of 0.6 mcg beta-carotene.This information is from the Office of Dietary Supplements and the Ultimate Pharmacy Calculations Guide. We've included mass equivalents of 1 IU for selected vitamins below. Converting from mg or mcg to IU for Vitamins A, C, D and E For a vitamin, consider contacting the vitamin manufacturer - their contact information is usually listed on the bottle. As an alternative, you could try contacting the drug manufacturer directly. If you want to find out how many micrograms (mcg) or milligrams (mg) are in one IU of your medication, you could contact your pharmacist to find out. The exact measure of one IU of a substance is in fact established by international agreement for each substance 1. This means that converting between international units and micrograms or milligrams is not a simple calculation and we can't provide a converter to do this calculation for you (sorry about that). The volume or mass that makes up one International unit is dependent on the concentration or potency of the substance and therefore varies from substance to substance depending on what is being measured. IU stands for International units and is a unit commonly used in the measurement of medications, vaccines and vitamins. Let's start this article by discussing what an International unit is. The reason for this is that the conversion isn't as simple as one might think. I think that people wonder why the International unit isn't in the lists featured in the mass and weight converter. Commonly, people want to work out the number of micrograms or milligrams in a medication or vitamin supplement. One of the most common conversion enquiries from visitors to this website converns how to convert between International units (iu) and micrograms (mcg) and milligrams (mg). By Alastair Hazell | Last update: 23 August 2022
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