What is the shelf life of various forms of Vitamin D?

by Greg
(Trenton, NC)

I have found information on the interenet that states that Vitamin D has a very short shelf life after it is produced. What I mean by this is not the shelf life in the body but the shelf life of the tablets, capsules or liquid supplements in the cupboard :)

Some information I found states that vitamin D will oxidize quickly and once exposed to oxygen will be depleted in 3-4 weeks rendering the tablets or other forms of the supplement pretty much useless.

What research have you found and what do you know about this aspect of vitamin D?


Comments for What is the shelf life of various forms of Vitamin D?

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Don't expose them to oxygen
by: Kerri Knox, RN- The Immune Queen!

I would be FAR FAR more worried about choosing the correct type of vitamin d (Vitamin D3) and the correct oils that are in your vitamin d. If you think about it, the vitamin d in capsules AREN'T exposed to oxygen- so therefore won't oxidize, so what you've heard really can't be true!

I've never heard of a problem with this and I wouldn't even let it concern you in the least. Just get good quality 'no oil' vitamin d's and it's not a problem. The stuff that I offer on my site is on back order frequently so is completely fresh.

If you are really worried about it, then order the stuff through me. But I personally don't worry about it at all. I worry about the oils that are used being oxidized (rancid) before they are ever even put in the capsules. Worry about rancid oils and getting enough magnesium if you really are interested in worrying about something.

Kerri Knox, RN

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