I am currently taking cod liver oil glucosamine chondroitina and 10pg of vit d ... i wish to take calcium magnesium too but has 5.0 vit d isit ok?

Confused by units: I am confused by your units.10 pg=.00001 mcg of vit d=.0004 iu which is an incredibly tiny amount, given that the recommended daily intake is 600 iu/day and most adults need 5000-8000 iu/day in fall and winter to achieve adequate levels.Toxicity has not been reported with intakes of 10, 000 iu/day or less. See http://www.Vitamindcouncil.Org/about-vitamin-d/how-do-i-get-the-vitamin-d-my-body-needs/.

Calcium not needed: Recent studies have shown that large doses of vitamin d are not advisable. Also, studies suggest that supplemental calcium also has little or no benefit.