Consult a health care practitioner prior to use if you are pregnant or breastfeeding; if you have kidney problems; if you are taking other vitamin D supplements, multivitamin supplements containing vitamin D, or products containing vitamin D analogues; if you are taking any prescription medication, including antacids, anticonvulsants, digoxin, cholestyramine, colestipol, mineral oil, steroids, statins or thiazide diuretics; and to determine whether you would benefit from a vitamin D supplement. A dose of 15-20 mcg (600-800 IU) of vitamin D per day is sufficient for most people.
Do not use in cases of hypercalcemia or hypercalciuria.
Discontinue use and consult a health care practitioner in case of weakness, fatigue, drowsiness, headache, lack of appetite, dry mouth, metallic taste, nausea, vomiting, dizziness, ringing in the ears, lack of coordination, or muscle weakness, which are early symptoms of hypercalcemia, or in case of other side effects.