Supplementation can be achieved through over-the-counter vitamin D2 or D3 preparations. D3 is generally preferred due to its greater efficacy in raising blood vitamin D levels. Dosage should be tailored to the individual's needs, considering factors such as age, baseline vitamin D levels, and risk factors for deficiency. It is essential to monitor serum 25-hydroxyvitamin D levels periodically to ensure adequacy and prevent toxicity.
