Symptoms of an acute vitamin D overdose3
early manifestations (caused by hypercalcemia) - constipation or diarrhea, dryness of the oral mucosa, headache, thirst, pollakiuria, nocturia, polyuria, anorexia, metallic taste in the mouth, nausea, vomiting, general weakness and fatigue, hypercalcemia, hypercalciuria, dehydration;
late manifestations - pain in the bones, clouding of urine (appearance of hyaline cylinders, proteinuria, leukocyturia in the urine), arterial pressure, pruritus, photosensitivity of the eyes, congestion hyperemia, arrhythmia, drowsiness, myalgia, nausea, vomiting, pancreatitis, gastralgia, psychosis (changes in the psyche) and mood changes.
Symptoms of Chronic Overdose of Vitamin D3 (with admission for several weeks or months for adults at doses of 20000-60000 IU / day, children - 2000-4000 IU / day): calcification of soft tissues, kidneys, lungs, blood vessels, arterial hypertension, renal and chronic heart failure these effects most often occur with adherence to hypercalcemia of hyperphosphataemia), dysplasia in children (prolonged use at a dose of 1800 IU / day).
Treatment. If the above symptoms appear, discontinue use of the drug and seek medical attention.A diet with a low calcium content (for several weeks), consumption of large amounts of fluid, diuresis with furosemide, electrolytes, as well as the appointment of glucocorticosteroids, calcitonin is indicated. With proper functioning of the kidneys, the calcium level can be significantly reduced by the infusion of an isotonic sodium chloride solution (3-6 liters within 24 hours) with the addition of furosemide and, in some cases, sodium edetate at a dose of 15 mg / kg / h, monitoring of calcium levels and electrocardiogram data. In oligoanuria, on the contrary, it is necessary to conduct hemodialysis (dialysate without calcium). The specific antidote is unknown.
To prevent an overdose, in some cases it is recommended to control the concentration of calcium in the blood.