Vitamin D causing indigestion?

Hi Moon; Take it with an 8oz. glass of Milk, period. If you can't stand Milk take it with 1200 +/- mgs. of calcium as 600mgs calcium per 1000mgs vitamin-D.

Too much vitamin D can cause an abnormally high blood calcium level, which could result in nausea, constipation, confusion, abnormal heart rhythm, and even kidney stones.

It's nearly impossible to get too much vitamin D from sunlight or from foods (unless you take way too much cod liver oil). Nearly all vitamin D overdoses come from supplements.

The Institute of Medicine's Food and Nutrition Board's 1997 recommendations -- scheduled for a May 2010 update -- suggest that 2,000 IU per day of vitamin D is safe for adults and that 1,000 IU per day is safe for infants up to 12 months of age.

However, the relatively small doses of vitamin D in daily vitamin pills are not enough to correct serious vitamin D deficiency. A 2009 study suggested that the best regimen for treating vitamin D insufficiency is 50,000 IU of vitamin D3 taken three times a week for six weeks. This time-limited regimen did not result in vitamin D toxicity.

How much vitamin D is too much? That's controversial. According to the National Institutes of Health, the maximum upper limit for vitamin D is 25 micrograms (1,000 IU) for children up to age 12 months and 50 micrograms (2,000 IU) for everyone else.

But some recent studies suggest that healthy adults can tolerate more than 10,000 IU of vitamin D per day. John Jacob Cannell, MD, executive director of The Vitamin D Council, notes that the skin makes 10,000 IU of vitamin D after 30 minutes of full-body sun exposure. He suggests that 10,000 IU of vitamin D is not toxic.

Hope this helps, best of luck.