Vitamin D may decrease from certain medications such as certain anti-seizure, corticosteroids, heparin, certain antibiotics, mineral oil, and antacids; or certain disease states such as celiac disease, Crohn’s disease and Whipple’s disease. You should not go over in supplementation. 2000 IU is the tolerable upper intake level for adults; supplementation over that may cause a risk for toxicity (weak muscles, weak bones, excessive bleeding, and kidney stones). Vitamin D is available through our foods - Fortified milk, breakfast cereals, egg yolks, fatty fish, fish oils, and the sun, as you mentioned.
I was just diagnosed with Vitamin D deficiency (16 - below the normal limit). The Endocrinologist prescribed 50,000 IU (one per week) for 3 months. I'm very reluctant to take this after reading about some of the side effects. Do you know of another way (nutrionally/naturally) to get my levels back up?
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