With a
vitamin D level of 6.5 ng/mL, this is a severe deficiency and treatment should not be delayed. A serum
calcium of 10.1 mg/dL is within the normal range, so it is safe to take vitamin D3 (cholecalciferol) as prescribed. Vitamin D supplementation does not cause dangerous calcium rise when taken in standard weekly doses and monitored appropriately the usual approach is 60,000 IU once weekly for 6â8 weeks followed by rechecking levels after correction a lower maintenance dose is advised to keep levels stable