Please see Preventive Health Advisor section on vitamin D. High dose vitamin D dosed monthly with 100,000 international units is controversial. The ideal dosage of vitamin D for adults has been reviewed to be 2000 international units of vitamin D3 daily which is associated with the lowest mortality (12,13). High dose vitamin D supplements is not supported by Preventive Health Advisor due to lack of research on safety, but the results of the study by Hornikx M et al does support supplementing vitamin D to COPD patients with deficient or insufficient levels. This practice should be guided by the physician by obtaining vitamin D levels to guide therapy.
