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 Convert and Calculate Post any conversion related questions and discussions here. If you're having trouble converting something, this is where you should post.* Guest Posting is allowed.

#11
01-02-2008, 02:31 AM
 Sam Guest Posts: n/a

I think that your information is incorrect. According to the official European Pharmacopoeia 1 mg of colecalciferol (Vitamin D3) is equivalent to 40,000 IU. If you were to take 800 mg this would be 40,000 * 800 = 32,000,000 IU or 16,000 of your 2,000 IU tablets! I suggest that you reconsider where you get your dosage information from.

The normal daily dosage for Vitamin D3 is 800 IU. Perhaps you have somehow confused 800 IU with 800 mg?

Sam (Pharmacist)
#12
04-23-2009, 02:32 AM
 Jamal Guest Posts: n/a

Please assit me to covert Vit A IU to mg
#13
04-23-2009, 02:37 AM
 Jamal Guest Posts: n/a

Please assist me to convert Vit A IU to mg
#14
10-22-2009, 04:31 PM
 Klemen Heber Junior Member Join Date: Oct 2009 Posts: 1 Rep Power: 0

I.U. stands for International Unit, some common conversions are listed below. Vitamin A 1 mg = 2,907 IU of Vitamin A acetate 1 mg = 1,818 IU of Vitamin A palmitate Vitamin E Synthetic 1 mg = 1.0 IU of dl-alpha tocopheryl acetate Vitamin E Natural 1 mg = 1.
#15
04-10-2010, 11:49 PM
 Unregistered Guest Posts: n/a

500 i.u. of vitamin e is equal to how many miligram of vitamin e?
#16
04-11-2010, 07:58 AM
 d1308 Guest Posts: n/a
mcg to IU conversion

How do I convert 31mcg of Vitamin K to IU?
#17
07-14-2010, 12:09 PM
 Unregistered Guest Posts: n/a

Quote:
 Originally Posted by Sam I think that your information is incorrect. According to the official European Pharmacopoeia 1 mg of colecalciferol (Vitamin D3) is equivalent to 40,000 IU. If you were to take 800 mg this would be 40,000 * 800 = 32,000,000 IU or 16,000 of your 2,000 IU tablets! I suggest that you reconsider where you get your dosage information from. The normal daily dosage for Vitamin D3 is 800 IU. Perhaps you have somehow confused 800 IU with 800 mg? Sam (Pharmacist)
I have the same difficulty, I think though that the mistake from the questioner was saying mg instead of mcg. I am interested to know how a 25mcg dose of D3 equates to a 400IU dose. Is it the same, or larger or what?
#18
09-12-2010, 11:29 AM
 Unregistered Guest Posts: n/a

Quote:
 Originally Posted by Unregistered Would you be able to assist me in converting vitamin D3 from IU to mg or back? provide the formula please. thanks! j
I also would like to know what 5000 IU of vitamin D would be in MG as my doctor told me to take 4000 MG of vitamin D daily
#19
11-22-2010, 07:45 PM
 Unregistered Guest Posts: n/a

I have been prescribed 50,000 IU a month in one capsule. I am confused also. It seems to me to be an extremely large dose taken once a month. It's amazing that nobody seems to really get an answer what the basis is. My pharmacist did not know either.
#20
11-23-2010, 09:45 AM
 Mrs X can't count, can't spell! Join Date: Feb 2006 Location: New Zealand Posts: 2,381 Rep Power: 11
Vitamin D Facts:

http://ods.od.nih.gov/factsheets/vitamind/

Here is a great summary from the USA government. There are a couple of tables on it, one shows adequate vitamin D intakes, in both IU and mcg (µg), the other shows upper allowable limits, both in per day allowances.

It says that 5mcg of vitamin D is 200IU.

NOTE: IU is a measure of the body's response to a medication and it is different for every substance.

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