Excess Intake of Vitamin A

[Doneitmanz]

Yo guys....just some queries for the experts?

I just bought a multi-vitamin pack and right now I am beginning to regret the purchase.

For example the RDI for Vitamin A intake is about 5000 IU...and many websites stated that excess vitamin A poses some form of threat to the well-being....

Basically the multi-vit I bought provides a stagerring 15,000IU of vit A (beta-carotene) and 5,000 IU of vit A ( Acetate)...seems pretty overwhelming to me...and if what most website and RDA states...it seems really over excessive...

Yeah I know us bodybuilders probably need more than the average adults, BUT ain't that really too much?

cheers!

 

[Mr.X]

Yo guys....just some queries for the experts?

I just bought a multi-vitamin pack and right now I am beginning to regret the purchase.

For example the RDI for Vitamin A intake is about 5000 IU...and many websites stated that excess vitamin A poses some form of threat to the well-being....

Basically the multi-vit I bought provides a stagerring 15,000IU of vit A (beta-carotene) and 5,000 IU of vit A ( Acetate)...seems pretty overwhelming to me...and if what most website and RDA states...it seems really over excessive...

Yeah I know us bodybuilders probably need more than the average adults, BUT ain't that really too much?

cheers!

No, it's not too much; nowhere have I seen studies pointing out that in athletes vitA can cause harm.

Mr.X

 

[Doneitmanz]

http://www.cc.nih.gov/ccc/supplements/vita.html#risk2

http://www.healthandage.org/Home/gid1=1053

Above are but a few of them....anyway RDI recommends 5000IU max man.......man, am I overdosing or what at 15,000IU!!

 

[Doneitmanz]

??

 

[collegiateLifter]

i think its around 80,000 IU that vit A has documented toxicity

 

[Ceebs]

The RDA is based on flawed studies that were done in the 1950's.

 

[Doneitmanz]

http://jama.ama-assn.org/issues/v287n11/ffull/jlt0320-2.html

http://www.hfma.co.uk/positionpaperVitAhipfracturesetc.htm

 

[Optimus B]

according to merck, vit a has toxicity >300,000 iu in children or chronic toxicity >100,000 iu/day for months in adults. i wouldn't be worried with 15,000 iu.
http://www.merck.com/pubs/mmanual/section1/chapter3/3c.htm

 

[Fyre]

Here's something from one of Earl Mindell's Vitamin books:
"Toxicity: More than 50,000 IU daily, if taken for many months, can produce toxic effects in adults. "
The amount you are taking is fine, just remember to take it with food, as Vitamin A is fat soluble, meaning it requires fats as well as minerals to be properly absorbed .

 

[Doneitmanz]

Hmmmm...thanks guys!

 

[Ceebs]

Allegedly - and I've read this a couple of different places - large amounts of Vitamin A taken by pregnant women can cause birth defects. But I doubt any of us in this thread have a bun kicking around in our ovens...

 

[ZKaudio]

hey speak for yourself buddy!