To be taken with an adequate intake of calcium.
Consult your healthcare practitioner prior to use if you are pregnant or breastfeeding, have kidney disorders, or 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. Extra strength formula for those with increased risk of vitamin D deficiency. Stop use and consult your healthcare 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 occur which are early symptoms of hypercalcemia or if you have any other side effects.