1 ng is 0.04 IU. So, to convert 12.5 microgram, multiply 12500 nanogram with 0.04; the required answer is 500 IU
1 mcg vitamin D (cholecalciferol) = 40 IU Let´s say you have 300 IU of vitamin D: 300 / 40 = 7,5 mcg vit. D Then you would have to convert 7,5 mcg to mg: 7,5 / 1000 = 0,0075 mg vitamin D.
1 IU is the biological equivalent of about 0.667 mg d-alpha-tocopherol (2/3 mg exactly), or of 1 mg of dl-alpha-tocopherol acetate
1000 IU Vitamin D = 25 mcg Vitamin D = 0.025 mg Vitmain D. to convert IU of vitamin D divide by 40 to get mcg, divide by 40,000 to get mg. The minimum daily requirements for vitamin D have been markedly increased recently, and there is great confusion since the commercial products are still labeled as IU (International Units) while the research papers are stated in units of ug (micrograms) and mg. I spotted many unanswered questions regarding this conversion factor. *I need conversion to/from a measure that looks like ug, where the u has a tail like a lower case p. Is this the same as IU or what? How much is 100 u(plustail)g Vitamin D?
vit D and calcium
Ans: 0.3 mg = 1,200 i.u...... 1 mg = 40,000 iu
Is a 1000 IU Vitamin D the same as 1000 mg of Vitamin D
No. International units are different for each vitamin measured. There is an answer on this site that tells you a few of the equivalents. They are 3.33 iu http://www.answers.com/topic/retinol-1 = 1 μg; 40 iu http://www.answers.com/topic/vitamin-d = 1 μg; 1 iu http://www.answers.com/topic/tocopherol-1 = 1 mg. For more info, search international unit.
d Because vit C is water soluble whereas vit D is fat soluble.
The international unit (IU) is not a measure of mass but only a measure of the drug effect.
A11AB - Multivitamins, other combinations ; Used as dietary supplements. ManufacturerMorishita-SeggsDistributorMetro DrugContents5-oxyanthranilic acid 0.2 mg, Ca pantothenate 5 mg, folic acid 0.2 mg, L- isoleucine 5.9 mg, L-acetyltryptophan 5 mg, L- leucine 18.3 mg, L- L-lysine HCl 25 mg, L-methionine 18.4 mg, nicotinamide 20 mg, L- phenylalanine 5 mg, L- threonine 4.2 mg, L- valine 6.7 mg, vit A 2,000 iu, vit B1 5 mg, vit B12 1 mcg, vit B2 3 mg, vit B6 2.5 mg, vit C 20 mg, vit D 200 iu, vit E 1 mgIndicationsMalnutrition, protein & vit deficiencies, anemia, convalescence, restoration & maintenance of body resistance, pregnancy & lactation, adjuvant in the therapy of peptic ulcer & TB.DosageAdult 1-2 cap/day. Childn 1 cap/day.AdministrationMay be taken with or without food (May be taken w/ meals for better absorption or if GI discomfort occurs.).Special PrecautionsMay color urine yellow.Adverse Drug ReactionsHypervitaminosis (large dose). View ADR Monitoring FormMIMS ClassVitamins &/or MineralsATC ClassificationA11AB - Multivitamins, other combinations ; Used as dietary supplements.
Vit-E is an "essential" nutrient-one that the body cannot manufacture, so you must obtain it from outside sources. The (RDA) "Recommended Daily Allowance" of Vit-E is 30 (IU) International Units. There have been many studies and clinical trials that show that Vit-E levels many times higher than the RDA, on average 400-800 IU per day may provide significant health benefits. The last publication that I read was 200 IU of Vit-E as D-Alpha Tocopherols, 2 X a day with food, based on a 2,000 calorie diet REMEMBER: RDA's were developed to avoid what are known as acute deficiency diseases like scurvy (deficiency of vitamin C), rickets (deficiency of vitamin D), and pellagra (deficiency of niacin) more than 50 years ago.