Vitamins A & D

Discussion in 'Health and Fitness' started by dredleviathan, Oct 7, 2003.

  1. dredleviathan

    dredleviathan New Member

    Hi,

    Whilst at class last night a friend of mine was telling me that his pharmacist had refused to sell him an A to Z multi-vitamin pill in conjunction with some Cod Liver oil capsules. They didn't say why.

    This got me thinking as I take a multi-vit and a cod liver oil capsule each morning. Sure enough it seems that both contain the same amount of vitamin A & D and both claim to offer 100% RDA of each per day but:

    Multi-vit - Vitamin A 800mcg; Vitamin D 5mcg
    Cod liver capsule - Vitamin A 800mg; Vitamin D3 5mg

    Now I'm assuming that mcg is a microgram. So how cna both be 100% of RDA?

    Also is there a danger in taking too much of either of these vitamins, if so at what level does this become an issue?

    Thanks

    Dred
     
  2. Kinjiro Tsukasa

    Kinjiro Tsukasa I'm hungry; got troll? Supporter

  3. dredleviathan

    dredleviathan New Member

    Thanks for those links mate.

    Vitamin D: "The Food and Nutrition Board of the Institute of Medicine considers an intake of 25 mcg (1,000 IU) for infants up to 12 months of age and 50 mcg (2,000 IU) for children, adults, pregnant, and lactating women to be the tolerable upper intake level (UL). A daily intake above the UL increases the risk of adverse health effects and is not advised."

    Vitamin A: "RDA for a man 19+ is 900mcg"

    So if my Cod Liver Oil capsules really do contain 5mg of Vit D and 800mg of Vit A per capsule I'm really over doing it! I think I'll write to the supplier to confirm the labelling of the supplement - possibly they mean micorgrams instead of milligrams?
     
  4. YODA

    YODA The Woofing Admin Supporter

    My one a day multivit contains...

    Vitamin A: 2500 IU, which is listed as 94% RDA

    Vitamin D: 400 IU, listed as 200% RDA
     
  5. AsSaSiN

    AsSaSiN New Member

    lol 200%! Maximum OvErLoAd :)
     
  6. YODA

    YODA The Woofing Admin Supporter

    Yeah - and I take 2 sometimes 3 of those per day :D

    The Vitamin B12 says 5000% RDA Bwaaaaahahahaaaa
     
  7. dredleviathan

    dredleviathan New Member

    So Dave, does this concern you at all? I mean we all supplement to try and give our bodies a helping hand not to poison them in some way.

    I guess that to get a licence to sell these products they have to fall within certain tolerances of the RDA but its when you combine 2 or 3 supplements each containing a portion of the RDA for any particular vit or min that its seems to be a concern.
     
  8. Kinjiro Tsukasa

    Kinjiro Tsukasa I'm hungry; got troll? Supporter

    The RDA's are only guidelines; and I imagine they depend on your age and size.

    I would definitely try to confirm the measurements being used; big difference between a microgram and a milligram.

    With some vitamins, if you take too much, the excess is just excreted; don't know if B12 is one of those. BTW, why would anyone need 5000% of RDA? :D
     
  9. YODA

    YODA The Woofing Admin Supporter


    Well - i've been taking then for about 3 years now (twitch twitch) and I'm ok so far (twitch twitch) :D
     
  10. dredleviathan

    dredleviathan New Member

    Hmmn well it is true you are looking less green and wrinkled these days and your tail is looking very healthy... must be down to the vitamins.
     

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