Toggle Health Problems and D

USANA found 5000 IU resulted in 50 ng - Winter 2010

USANA is a large supplement provider. "Nutritionals you can trust"

Started in 1992, in 14 countries in 2010, pricey but very nice

They do not appear to sell 5,000 IU capsules, yet their chart shows that 5,000 is how much many people need

Their solid tablet has 2000 IU and 30 mg of vitamin K (does not say: K1 vs K2)

There have been several reports of problems with vitamin D in solid tablets - about 1/3 the benefit as capsule form
But, the chart below implies that USANA solid tablet is OK
This assumes that most of the USANA customers were taking USANA supplements, and not just those at the left side of the graph.
Note the great number of USANA customers taking 2,000 or 4,000 on the graph.
This correlates with USANA selling 2,000 IU tablets

USANA on vitamin D after the IoM announcement

Dose response chart Winter 2010: see wiki page for details and link:http://www.vitamindwiki.com/tiki-index.php?page_id=1197

USANA's comment on Institute of Medicine Dec 6 pronouncement

USANA "continues to recommend that supplemental vitamin D in the range of 2000 to 4000 IU per day is much more appropriate for maintaining overall health."

See also on VitaminDwiki

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