We conducted a rigorous study to investigate the effectiveness of ergocalciferol, a form of vitamin D2, in combating vitamin D inadequacy among institutionalized postmenopausal women. This randomized double-blinded placebo-controlled trial involved 94 participants who were administered either 40,000 IU (standard dose) or 100,000 IU (high dose) weekly for 12 weeks, aiming to see which dosage would best improve vitamin D levels.
Remarkably, our findings revealed that those receiving the higher dose of ergocalciferol achieved significantly better results in terms of boosting their serum 25(OH)D levels compared to those on the lower dose. Specifically, 90.9% of the high dose group reached optimal vitamin D levels, while just 65.9% of the standard group achieved the same. Even more telling was that in the subgroup with severe vitamin D deficiency, all participants on the high dose succeeded in reaching optimal levels.
However, when we looked at measures of physical strength, mobility, and quality of life, there were no notable differences between the two groups. This indicates that while high-dose vitamin D2 effectively improves vitamin D levels, its impact on overall health and well-being requires further exploration.
Our study highlights the importance of vitamin D2 supplementation, particularly for those who are most vulnerable, like institutionalized postmenopausal women. It shows that higher doses can lead to better vitamin D status, but we must remain cautious about assuming that improving vitamin D levels will automatically enhance other aspects of health.