Natural Factors SunVitamin D3 2500 IU supplies 2500 IU (62.5 mcg) of vitamin D3 in one tablet. Vitamin D intake, when combined with sufficient calcium, a healthy diet and regular exercise may reduce the risk of developing osteoporosis in people with vitamin D deficiency.
What is vitamin D3?
Vitamin D3, or cholecalciferol, is the type of vitamin D that skin produces when it is exposed to the sun's UVB rays, which is how it earned the nickname sunshine vitamin. Few foods contain much of it; fatty fish, egg yolk and fortified milk are the main ones. In Canada, the sun sits too low in the sky for much of the fall and winter for skin to make meaningful amounts, so diet and supplements carry more of the load in those months.
Key features
2500 IU (62.5 mcg) vitamin D3 per tablet
Cholecalciferol
100 or 250 tablets
Vegetarian, gluten-free, non-GMO, dairy-free and soy-free
Why 2500 IU?
Vitamin D3 tablets are sold in a range of strengths. This is a higher-strength tablet, giving 2500 IU in one piece for adults who want more than the common 1000 IU size.
Dosage: Recommended adult dose (18 years old and above): 1 tablet daily or as directed by a health care practitioner. To be taken with an adequate intake of calcium. Consult a health care practitioner for use beyond 6 months.
Cautions: Consult a health care practitioner prior to use if you are pregnant or breastfeeding, if you have kidney disorders, if you take other vitamin D supplements, multivitamin supplements containing vitamin D, or products containing vitamin D analogues, or any prescription medications, including antacids, anticonvulsants, digoxin, cholestyramine, colestipol, mineral oil, steroids, statins, or thiazide diuretics. 15–20 mcg (600–800 IU) of vitamin D per day is adequate for most individuals. Consult a health care practitioner to determine if you would benefit from additional vitamin D before taking this product. Do not use this product if you have hypercalcemia and/or hypercalciuria. Stop use and consult your health care practitioner if weakness, fatigue, drowsiness, headache, lack of appetite, dry mouth, metallic taste, nausea, vomiting, vertigo, ringing in the ears, lack of coordination, and muscle weakness (which are early symptoms of hypercalcemia) occur, or if you have any other side effects. Keep out of the reach of children.
